JAMB UTME - Physical Education - 2023

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The correct answer that helps human sperm with locomotion is the flagellum. The flagellum is a long, whip-like structure that is present in the sperm. It is responsible for the movement of the sperm through various fluids in order to reach and fertilize the egg.
The flagellum is composed of microtubules, which are tiny structures that give it its shape and strength. These microtubules are arranged in a pattern that allows the flagellum to move in a whip-like motion. This motion propels the sperm forward, allowing it to swim through the female reproductive tract towards the egg.
The movement of the flagellum is powered by a complex biochemical process. Inside the flagellum, there are structures called dynein arms. These dynein arms use energy from ATP molecules to move and bend the microtubules, causing the flagellum to move in a coordinated manner.
The flagellum is essential for the sperm's ability to swim and reach the egg for fertilization. Without a functional flagellum, the sperm would not be able to move effectively and would have a much lower chance of successfully fertilizing an egg.
In summary, the flagellum is the structure in human sperm that helps with locomotion. Its whip-like motion, powered by dynein arms and ATP, allows the sperm to swim towards the egg for fertilization.

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Saliva helps in the digestion of starch.
Starch is a carbohydrate that is found in foods like rice, potatoes, bread, and pasta. When we eat foods containing starch, our body needs to break it down into smaller molecules so that it can be absorbed and used for energy.
This is where saliva comes in! When we chew our food, our salivary glands produce saliva that contains an enzyme called amylase. Amylase is responsible for breaking down the starch molecules into smaller sugar molecules called glucose.
By breaking down starch, saliva helps to start the process of digestion and makes it easier for our body to absorb and utilize the energy from the food we eat.
Saliva doesn't directly help in the digestion of proteins, fats, or vitamins. These nutrients are broken down by different enzymes and processes in our digestive system.
In summary, saliva plays an important role in the digestion of starch by producing an enzyme called amylase that breaks down starch into smaller sugar molecules.

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A component of a school health program is **health services**. Health services are an essential part of a school health program as they involve medical professionals and resources that cater to the healthcare needs of students. These services can include regular health check-ups, immunizations, first aid, and treatment for minor illnesses and injuries. Health services also provide support for students with chronic conditions such as asthma or diabetes. The presence of health services in schools ensures that students have access to immediate medical care and support, promoting their overall well-being and enabling them to focus on their studies. These services can be provided by school nurses or in collaboration with local healthcare providers. It is important to note that while external services and curable services may contribute to the well-being of students, they are not specific components of a school health program. External services may refer to community organizations or agencies that provide support to schools but are not directly part of the program. Curable services may not be a relevant term in the context of a school health program, as it is unclear what specific services it entails. In summary, health services are an integral component of a school health program, ensuring the physical well-being of students by providing access to medical care, support, and resources.

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Only 3 trials are allowed in shot put.

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Revolutionary nationalism is the form of nationalism where its goals are achieved through revolution.
In this type of nationalism, people are united by a strong desire for change and liberation from a certain political or social system. The movement is driven by the belief that the current system is oppressive or unfair, and that a revolution is necessary to bring about the desired changes.
During a revolution, there may be protests, demonstrations, and even armed conflicts against the existing government or ruling power. The aim is to overthrow the current system and replace it with a new one that aligns with the aspirations and ideals of the nationalist movement.
One of the most notable examples of revolutionary nationalism is the American Revolution. In the 18th century, American colonists felt that they were being unfairly treated by the British government and demanded independence. They organized protests, boycotts, and eventually took up arms against the British forces. Through the Revolutionary War, the American colonists were able to achieve their goal of establishing the United States as an independent nation.
Revolutionary nationalism often involves a strong sense of patriotism and a belief in the power of the people to shape their own destiny. It aims to create a new political order that reflects the values and aspirations of the nation.
Key points: - Revolutionary nationalism achieves its goals through revolution. - It involves protests, demonstrations, and even armed conflict against the existing government or ruling power. - The aim is to overthrow the current system and replace it with a new one that aligns with the aspirations and ideals of the nationalist movement. - The American Revolution is a notable example of revolutionary nationalism. - It involves a strong sense of patriotism and belief in the power of the people to shape their own destiny.

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The ability of the body systems to work together efficiently to allow you to be healthy and perform activities of daily living is physical fitness. Physical fitness refers to the overall condition of your body and how well it can perform physical activities. It involves different aspects such as strength, endurance, flexibility, and cardiovascular health.
When your body systems, such as the respiratory, circulatory, muscular, and skeletal systems, are in good condition and work together harmoniously, you have a higher level of physical fitness. This means your body can efficiently carry out tasks and movements, allowing you to have the energy and stamina to engage in activities without getting tired quickly.
Physical fitness also plays a vital role in maintaining good posture. Having strong muscles and a flexible body can help support your spine and maintain proper alignment, reducing the risk of developing posture-related issues.
Additionally, physical fitness has a positive impact on the immune system. Regular exercise and staying physically active can boost your immune system and help protect against various illnesses and diseases. When you are physically fit, your body is better equipped to fight off infections and recover more quickly.
In summary, physical fitness is essential for the body systems to work together efficiently. It allows you to stay healthy, have the energy and stamina for daily activities, maintain good posture, and enhance the functionality of your immune system.

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The external openings of the nasal cavity that admit air to the lungs are called nostrils.
The nostrils, also known as the nares, are the two openings at the base of the nose. They are responsible for allowing air to enter our respiratory system. When we breathe in, air flows through the nostrils and passes into the nasal cavity, which is a hollow space inside the nose.
The nostrils play an essential role in the respiratory process. As we inhale, the air enters the nasal cavity and is filtered, moistened, and warmed before it reaches the lungs. The nostrils are lined with small hairs called cilia, which help to filter out dust, pollen, and other particles from the air we breathe. The nose also contains mucus-secreting cells that moisten the air, preventing it from drying out the delicate lung tissues. Additionally, the nasal cavity has a rich blood supply, which helps to warm the air before it reaches the lungs, ensuring that it is at the right temperature for optimal breathing.
In summary, the nostrils are the external openings of the nasal cavity that allow air to enter the respiratory system. They filter, moisten, and warm the air, preparing it for the lungs to ensure efficient respiration.

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A fracture is a break, usually in a bone. If the broken bone punctures the skin, it is called an open or compound fracture.

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Pole vault is not a throw event. It is a field event in athletics where a person uses a long, flexible pole (which today is usually made either of fiberglass or carbon fiber) as an aid to jump over a bar. Javelin throw, shot put, and hammer throw are all throw events.

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The medulla oblongata controls the breathing rate in humans. Medulla oblongata is a part of the brainstem that is responsible for many involuntary functions including breathing. It is located at the base of the brain, just above the spinal cord.
The medulla oblongata contains special cells called respiratory centers, specifically the dorsal respiratory group (DRG) and the ventral respiratory group (VRG). These centers detect the levels of carbon dioxide (CO2) and oxygen (O2) in the blood.
When the carbon dioxide levels in the blood increase, the DRG signals the muscles of the diaphragm and the ribcage to contract. This causes inhalation, allowing fresh oxygen to enter the lungs and carbon dioxide to be exhaled. On the other hand, when the carbon dioxide levels decrease, the DRG signals the muscles to relax, resulting in exhalation.
The medulla oblongata also communicates with the hypothalamus and the thalamus, but their roles are not directly related to controlling the breathing rate. The hypothalamus regulates body temperature, hunger, thirst, and other functions, while the thalamus is involved in relaying sensory information to the cerebral cortex.
The cerebellum, although important for coordination and balance, does not control the breathing rate.
In summary, the medulla oblongata is responsible for controlling the breathing rate in humans by detecting the levels of carbon dioxide in the blood and signaling the muscles involved in breathing to adjust accordingly.

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Muscles are responsible for movement in the human body. They play a vital role in facilitating various types of movements such as running, walking, and even simple actions like moving an arm or winking an eye. Muscles are special tissues that can contract and relax, enabling them to generate force and movement.
When our brain sends a signal to move a certain part of our body, the muscles associated with that movement receive the message and contract. As the muscles contract, they pull on the bones connected to them through tendons. This pulling action enables the bones to move, resulting in the desired movement.
Muscles work in opposing pairs, known as antagonistic pairs. This means that when one muscle in the pair contracts, the other relaxes to allow movement. For example, when we bend our arm, the biceps muscle contracts, while the triceps muscle relaxes. Conversely, when we straighten our arm, the triceps muscle contracts, and the biceps muscle relaxes.
In summary, muscles are the main component responsible for movement in the human body. They are capable of contracting and relaxing, allowing them to generate force and facilitate various types of movements.

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One of the options in the list that is an indoor game is chess.
Chess is a strategic board game that is played between two players. It is typically played indoors on a square board consisting of 64 squares of alternating colors. The objective of the game is to checkmate the opponent's king, which means putting the opponent's king in a position where it is under immediate attack and cannot escape capture.
Chess is considered an indoor game because it is typically played in a controlled environment, such as indoors at home, in schools, or in chess clubs. The game requires a calm and quiet setting, as players need to concentrate, think ahead, and plan their moves strategically.
Unlike outdoor games such as sprinting, soccer, and swimming, which require physical activity and are played in open spaces, chess is a mental and intellectual game that can be enjoyed indoors. It can be played at any time, independent of weather conditions. Chess also promotes critical thinking, problem-solving, and decision-making skills, making it a popular choice for intellectual stimulation and competition.
In summary, chess is an indoor game because it is played on a board, requires mental effort, and is typically enjoyed in a controlled environment, providing an opportunity for strategic thinking and intellectual engagement.

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Harding James Ekperigin is widely recognized as the father of physical education in Nigeria. He made significant contributions to the development and promotion of physical education in the country.

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The assistant referees in a soccer game are also called linesmen.
These linesmen play a crucial role in assisting the main referee in making important decisions during the game. They are positioned along the sidelines of the field and their main responsibilities include:
1. Offside Decision: One key responsibility of the linesmen is to help the referee determine if a player is in an offside position. Offside is a rule in soccer that prevents players from being in a forward position and actively involved in play when the ball is played to them, unless there are enough defenders between them and the goal line. The linesmen use their position and judgement to raise their flag and notify the referee if they believe an offside has occurred.
2. Out of Play Decision: The linesmen also assist the referee in determining if the ball has gone out of play. This includes situations such as when the ball has fully crossed the sideline or the goal line. If the linesman sees the ball go out of play, they raise their flag to signal that the ball is no longer in play.
3. Fouls and Decisions: The linesmen also help the referee identify fouls and infringements that may have occurred during the match. They can communicate with the referee through subtle gestures or flag signals if they notice an infringement that the referee may have missed. This helps the referee make fair and accurate decisions.
4. Substitutions: The linesmen also assist in managing substitutions during the game. They keep track of the number of substitutions made by each team and inform the referee when a substitution is requested.
In summary, the linesmen are an essential part of the officiating team in a soccer match. They assist the referee in making important decisions regarding offside, out of play situations, fouls, and substitutions.

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The organ that is not part of the alimentary canal is the skin.
The alimentary canal is a long tube-like structure in our body that is responsible for the process of digestion. It begins at the mouth and ends at the anus. The purpose of the alimentary canal is to break down the food we eat into smaller, absorbable molecules that our body can use for energy, growth, and repair.
The organs that make up the alimentary canal include the mouth, esophagus, stomach, small intestine (which consists of the duodenum, jejunum, and ileum), and large intestine (which consists of the colon and rectum). These organs work together to digest and absorb nutrients from the food we consume.
However, the skin is not part of the alimentary canal. The skin is the outer covering of our body and serves as a protective barrier against the external environment. It plays a crucial role in regulating body temperature, preventing water loss, and protecting our internal organs from injury and infections. While the skin is important for our overall health and well-being, it is not involved in the digestion process like the organs of the alimentary canal are.
In summary, the skin is not part of the alimentary canal because it is not involved in the process of digestion. The alimentary canal consists of organs such as the mouth, esophagus, stomach, small intestine, and large intestine, which work together to break down and absorb nutrients from the food we eat.

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The type of exchange in a relay race, in which the receiver's hand is behind them at the waist height with the palm facing down, is called the Upsweep.
During the upsweep exchange, the runner who is about to receive the baton holds their hand behind them, at waist height, with the palm facing downward. This position allows for a smooth and efficient transfer of the baton from the outgoing runner to the incoming runner.
The upsweep exchange is advantageous because it allows for a quick and secure handoff between the two runners. The palm facing downward helps ensure that the baton is securely placed in the receiving runner's hand, minimizing the risk of dropping or losing control of the baton.
This type of exchange is commonly used in relay races because of its reliability and efficiency. It allows for a seamless transition between runners and minimizes the potential for errors during the baton exchange, ultimately contributing to the overall success of the relay team.

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The traditional game in Nigeria before colonization is the ayo game. Ayo game is a popular Mancala game played by many tribes across Nigeria. It is a board game where players take turns picking up seeds from small pits and sowing them in other pits, trying to capture as many seeds as possible. In the ayo game, each player uses a wooden board with several small pits dug into it. These pits are filled with seeds or beads. The goal of the game is to capture as many seeds as possible from your opponent's side. Players take turns and strategically sow the seeds from one pit to another in a clockwise direction. They can capture seeds when the last seed sown ends up in an empty pit on their side. Ayo game is not only a fun pastime but also a cultural game that has been played for generations in Nigeria. It is a game that helps enhance strategic thinking, concentration, and mathematical skills. Overall, ayo game is a traditional and beloved game in Nigeria that has stood the test of time and continues to be enjoyed by people of all ages.

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The first modern Olympic Games were held in 1896. These games marked the revival of the ancient Greek tradition of hosting athletic competitions. The idea behind the modern Olympics was to promote peace and goodwill among nations through sports.
The Olympic Games were first organized by a French nobleman named Pierre de Coubertin. He believed that sports could bring people from different countries together and promote understanding and friendship.
The city of Athens, Greece was chosen as the host for the inaugural modern Olympic Games. This was a significant choice because it was in Greece where the ancient Olympics were held for centuries.
The first modern Olympics brought together athletes from 14 different countries to compete in various sporting events. The games included events such as athletics, cycling, swimming, and gymnastics.
The opening ceremony of the 1896 Olympics was a simple affair compared to the elaborate ceremonies we see today. It took place in the Panathenaic Stadium, a venue with historical significance dating back to ancient times.
The Olympic Games have been held every four years since 1896, with a few interruptions due to world wars. They have grown in scale and popularity over the years, becoming one of the most prestigious sporting events in the world.
In conclusion, the first modern Olympic Games were held in 1896 in Athens, Greece. These games marked the revival of the ancient Greek tradition and aimed to promote peace and goodwill among nations through sports.

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To win a game in badminton, a player or a team needs to score a certain number of points. The number of points required to win a badminton game is 21 points.
However, there are certain rules that need to be followed in order to determine the winner. The winner must also have a 2-point lead over their opponent to secure the victory.
Let me explain the scoring system more in detail. In badminton, each rally results in a point being awarded to one of the players or teams. The rally starts with a serve and ends when the shuttlecock hits the ground within the boundaries, or if a fault is committed by one of the players.
Regardless of who served, a point is awarded to the serving side every time they win a rally. If the serving side loses a rally, the serve will be handed over to the opposing side, and they will have an opportunity to score points.
The game is played until one player or team reaches 21 points, with a 2-point lead. If the score reaches a tie at 20-20, it is called a "deuce". In a deuce, players need to continue playing until a player or team gains a 2-point lead to win the game.
In summary, to win a badminton game, a player or team needs to score 21 points with a 2-point lead over the opponent.

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The human heart is located in the thoracic cavity.
The thoracic cavity is the space found in the chest region between the neck and the diaphragm. It is protected by the rib cage and contains vital organs such as the heart and lungs.
The heart, which is a muscular organ responsible for pumping blood throughout the body, is specifically positioned in the middle of the thoracic cavity, slightly tilted to the left. It is surrounded and protected by the lungs.
The positioning of the heart in the thoracic cavity allows it to be close to major blood vessels and organs, facilitating its primary function of pumping oxygenated blood to the body and deoxygenated blood back to the lungs for oxygenation.

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The objective of physical education is to promote overall well-being and enhance various aspects of an individual's life through physical activities. It aims to improve physical fitness, develop the habit of sportsmanship, and enhance emotional stability. However, **"To be able to bully people"** is not an objective of physical education. Physical education focuses on teaching students about the importance of physical health and well-being. It aims to help students develop and maintain a healthy lifestyle by engaging in regular physical activities. Through physical education, students learn about the importance of physical fitness, including cardiovascular and muscular endurance, flexibility, and strength. Another objective of physical education is to develop the habit of sportsmanship. This includes teaching students about fair play, teamwork, and respect for others. Sportsmanship encourages students to compete with integrity, showing respect for their opponents and abiding by the rules of the game. It promotes values such as cooperation, discipline, and fair competition. Additionally, physical education plays a role in developing emotional stability. Engaging in physical activities can help students manage stress, improve their mood, and develop a positive mindset. Physical education classes often include activities that promote relaxation, stress reduction, and mental well-being. However, **"To be able to bully people"** does not align with the objectives of physical education. Bullying goes against the principles of sportsmanship and personal well-being. Physical education aims to create a safe and inclusive environment where all students can participate and enjoy physical activities without fear or intimidation. In conclusion, physical education objectives focus on developing physical fitness, promoting sportsmanship, and enhancing emotional stability. It does not aim to encourage or support bullying behavior, as the well-being and respect for others are fundamental principles of physical education.

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The amount of force you can put out is dependent on your muscular strength. Muscular strength refers to the maximum amount of force that a muscle or group of muscles can generate. It is determined by factors such as muscle size, fiber type, and the ability of the muscles to contract. Stamina, agility, and muscular endurance are all related to physical performance, but they do not directly determine the amount of force that can be exerted. - Stamina is the ability to sustain prolonged physical or mental effort. It is more focused on maintaining energy levels and enduring long-duration activities rather than generating high levels of force. - Agility is the ability to change direction quickly and efficiently. It involves coordination, balance, and speed. While agility is important for overall physical performance, it does not necessarily correlate with the amount of force that can be produced. - Muscular endurance refers to the ability of a muscle or group of muscles to repeatedly exert force or sustain an activity over an extended period. It is related to the capacity to resist fatigue, but it does not directly determine the maximum force output. Therefore, the primary factor affecting the amount of force you can put out is your muscular strength. Developing and improving muscular strength through proper training and exercise can increase your ability to generate force and perform tasks that require strength.

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The smallest unit of social organization in our society is the family.
The family is a group of people who are related by blood, marriage, or adoption and live together in a household. Families provide individuals with emotional support, shelter, food, and other basic needs. They are the building blocks of society, as they are responsible for nurturing and socializing individuals from a young age.
Families are usually led by parents or guardians who provide guidance and instill values in their children. They teach them essential life skills and help them develop a sense of identity. Additionally, families often pass down cultural traditions, beliefs, and customs from one generation to another.
While peer groups, clans, and communities are also important social units, they are typically larger than families and may include multiple families or individuals who are not directly related. Peer groups consist of individuals who are of similar age or have common interests, while clans are extended families with a common ancestry, and communities are groups of individuals who live in the same geographical area.
In summary, while peer groups, clans, and communities play significant roles in our society, the smallest and most fundamental unit of social organization is the family. Families provide the foundation for a person's social development, upbringing, and support.

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Non-visual baton exchange is the type of baton exchange in which the receiver of the baton will not see as the baton is being placed in his/her hand.

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31 pairs of spinal nerves are located in the human body.

The spinal nerves are part of the peripheral nervous system, which is responsible for transmitting signals between the central nervous system (brain and spinal cord) and the rest of the body.

The nerves emerge from the spinal cord in the vertebral column and pass through spaces called intervertebral foramina to reach different parts of the body.

There are 31 pairs of spinal nerves in total:

- 8 pairs of cervical nerves (C1-C8): These emerge from the nekc area and supply signals to the neck, shoulders, arms, and hands.

- 12 pairs of thoracic nerves (T1-T12): These emerge from the upper back area and supply signals to the chest, abdomen, and back.

- 5 pairs of lumbar nerves (L1-L5): These emerge from the lower back area and supply signals to the lower back, buttocks, and legs.

- 5 pairs of sacral nerves (S1-S5): These emerge from the pelvis area and supply signals to the pelvis, genitals, and legs.

- 1 pair of coccygeal nerves: These emerge from the base of the spine and supply signals to the tailbone area.

Each pair of spinal nerves has a sensory component, which carries signals from the body to the spinal cord and a motor component, which carries signals from the spinal cord to the muscles and organs.

By having 31 pairs of spinal nerves, the human body is able to send and receive signals to and from every part of the body, allowing for movement, sensation, and control over bodily functions.

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In a table tennis game, a deuce means that both players have reached a point of tie. It happens when the score reaches 10-10. At this point, the game becomes a deuce, and players continue playing until one player gets a lead of 2 points. So, a deuce is not a loss, a win, or a foul. It simply indicates a tie in the game where players need to score 2 consecutive points to win the game.

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The swimming stroke that is not listed among the options is the downstroke.

Let's briefly discuss the other three swimming strokes to understand why the downstroke is not considered a swimming stroke:

Crawl: Also known as freestyle, the crawl is the fastest and most commonly used stroke in competitive swimming. It involves a continuous alternating arm motion and a flutter kick. Swimmers move their arms in a windmill-like pattern, pulling the water towards them, while their legs kick in a repetitive up and down motion.

Backstroke: As the name suggests, swimmers swim on their backs, facing up. The main propulsive force in backstroke comes from the alternating arm movement, similar to the crawl stroke. The arms move in a wider arc, and the hands enter the water pinky-first. The legs perform a flutter kick, similar to that of the crawl stroke.

Breaststroke: The breaststroke is the slowest of the four competitive swimming strokes, but it is often considered the most graceful. Swimmers synchronize a frog-like kick and an arm pull to propel themselves through the water. The arms move together in a half-circle motion underwater, while the legs kick outwards and then back inwards simultaneously.

Downstroke: The term "downstroke" does not correspond to any recognized swimming stroke. It may be a term used in other contexts or in certain swimming drills, but it is not a distinct swimming stroke like the crawl, backstroke, or breaststroke.

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The agency that fights human trafficking in Nigeria is NAPTIP, which stands for National Agency for the Prohibition of Trafficking in Persons. NAPTIP was established in 2003 as a response to the increasing cases of trafficking in persons both within and outside Nigeria.
NAPTIP is primarily responsible for investigating, prosecuting, and preventing human trafficking activities in Nigeria. The agency works towards the elimination of all forms of human trafficking, including child labor, sexual exploitation, and forced labor.
NAPTIP's mandate covers a wide range of activities aimed at combating human trafficking, including rescue and rehabilitation of victims, public awareness campaigns, policy advocacy, and collaboration with national and international partners.
The agency focuses on four key pillars in the fight against human trafficking: 1. Prevention: NAPTIP conducts sensitization campaigns and educational programs to raise awareness about the dangers and consequences of human trafficking. They work with communities, schools, and vulnerable groups to prevent individuals from being trafficked. 2. Prosecution: NAPTIP works closely with law enforcement agencies to investigate and prosecute perpetrators of human trafficking. They gather evidence, identify and apprehend traffickers, and ensure they face legal consequences for their actions. 3. Protection: NAPTIP provides shelter, medical care, counseling, and other support services to victims of human trafficking. They work towards the physical, psychological, and social rehabilitation and empowerment of survivors, ensuring they are reintegrated into society. 4. Partnerships: NAPTIP collaborates with national and international organizations, government agencies, civil society groups, and law enforcement agencies to strengthen the fight against human trafficking. This includes sharing information, resources, and expertise to improve coordination and effectiveness.
Through its efforts, NAPTIP is making significant progress in combating human trafficking in Nigeria. However, the fight against human trafficking is an ongoing battle, and NAPTIP continues to work tirelessly to ensure the protection and well-being of individuals vulnerable to exploitation and trafficking.

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The vestigial bony part of the human skeleton is the Coccyx.
The coccyx, also known as the tailbone, is a small triangular structure located at the bottom of the vertebral column. It consists of three to five fused vertebrae.
In the past, the coccyx had a more functional role in our ancestors who had tails. However, over millions of years of evolution, the tail became unnecessary for human survival and gradually disappeared.
Today, the coccyx serves as a vestigial structure, meaning it is a remnant of our evolutionary past that no longer has a significant function. It is a reduced and modified version of what used to be a functional tail.
Function: While the coccyx no longer has a significant role in humans, it does serve as an attachment point for several muscles, tendons, and ligaments. These structures help support our body weight when we sit or stand and also play a role in stabilizing our pelvis.
Development: During embryonic development, the coccyx starts as separate vertebrae. However, as the fetus develops, these vertebrae gradually fuse together to form the coccyx. This fusion is typically complete by early adulthood.
Importance: Although the coccyx is a vestige of our evolutionary past with no significant function in modern humans, it can still be susceptible to injury or discomfort. Falls, trauma during childbirth, or prolonged sitting on hard surfaces can lead to coccyx pain or fracture.
To summarize, the coccyx is the vestigial bony part of the human skeleton. It is a remnant of our evolutionary history when our ancestors had tails. Although it no longer has a significant function, it serves as an attachment point for muscles and plays a role in supporting our pelvis.

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100m is an example of a sprint race. Sprint races are short distance races in athletics and running. They involve running as fast as possible over a short distance. The other options like marathon and 1,500m are long distance races, and 400m is considered a middle distance race.

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Kicking is not a skill and technique in boxing. Boxing is a combat sport that involves using punches and defensive techniques inside a ring. The objective is to score points by landing clean and powerful punches on the opponent while avoiding getting hit. The sport is strictly limited to the use of the hands only, which means that kicking is not allowed in boxing. Here is a breakdown of the other options: - **Dodging**: Dodging is a crucial skill in boxing. It involves moving the body and head to avoid incoming punches from the opponent. By dodging, a boxer can evade punches and minimize the chances of getting hit. - **Ducking**: Ducking is another defensive technique used in boxing. It involves bending the knees and lowering the body to avoid an opponent's punch, primarily aimed at the head. By ducking, a boxer can create space and avoid getting struck by an incoming punch. - **Jabbing**: Jabbing is a basic and essential technique in boxing. It is a quick, straight punch thrown with the front hand, usually the non-dominant hand. Jabs are used to set up combinations, keep the opponent at bay, and score points in boxing matches. In summary, while dodging, ducking, and jabbing are fundamental skills and techniques in boxing, kicking is not permitted in this sport. Boxing relies solely on punches and defensive maneuvers using the hands.

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The key locomotor skills refer to the movement skills that involve the coordination and control of the body. They are important for physical development and daily functioning. Among the listed options, singing is not a locomotor skill.

Crawling is the movement skill where an individual moves on their hands and knees or hands and feet while their abdomen is off the ground.

Climbing is the locomotor skill where an individual ascends or descends an object or structure using their hands and feet.

Walking is a well-known locomotor skill that involves moving forward in a rhythmic manner by alternating steps between the feet while maintaining balance.

On the other hand, singing is a form of vocalization using the voice to produce musical tones and vocal sounds, which is not directly related to body movement and coordination.

Therefore, among the given options, singing is the key locomotor skill that is not included in the list.

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A track event is a type of competition that involves running, jumping, or throwing on an oval-shaped track. Out of the given options, the track event is the 100m race.
The triple jump and high jump are both field events, rather than track events. The triple jump is a jumping event that involves three consecutive phases: the hop, the step, and the jump. Athletes aim to jump as far as possible in one single attempt.
Similarly, the high jump is also a jumping event. Athletes try to leap over a horizontal bar set at a specific height without knocking it down. The higher the bar, the greater the difficulty.
The pole vault, on the other hand, involves using a long, flexible pole to propel oneself over a horizontal bar. Athletes sprint down a runway, plant the pole in a specially designed box, and use it to propel themselves over the bar.
In summary, the 100m race is the track event among the given options. It is a sprinting event where athletes compete to be the fastest over a distance of 100 meters.

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Headache is not a water-borne disease.
Water-borne diseases are illnesses caused by microorganisms that are transmitted through contaminated water. These pathogens can enter the body when we consume or come into contact with contaminated water.
Hepatitis is a water-borne disease that affects the liver. It is caused by various viral infections, such as hepatitis A, B, and C.
Cholera is another water-borne disease caused by the bacterium Vibrio cholerae. It leads to severe diarrhea and dehydration if left untreated.
Typhoid is also a water-borne disease caused by the bacterium Salmonella typhi. It causes high fever, abdominal pain, and weakness.
However, headache is not caused by contaminated water. It can be induced by various factors like stress, tension, dehydration, eye strain, or medical conditions. While dehydration can contribute to a headache, it is not the sole cause. Headaches can occur regardless of the water quality and do not require the presence of waterborne pathogens to develop.
Therefore, out of the given options, headache does not belong to the category of water-borne diseases.

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The correct answer is a **polygamous family**. In a polygamous family, one spouse (whether it be a man or a woman) has multiple spouses. This means that the individual has entered into multiple legal marriages simultaneously. Polygamy can take different forms. One common form is **polygyny**, where a man has multiple wives. In this case, the man is the only one who is allowed to have multiple spouses. Another form is **polyandry**, where a woman has multiple husbands. However, polyandry is less common compared to polygyny. In a polygamous family, the spouses may live together or in separate households. It is important to note that the type of family structure can vary across different cultures and religions around the world. While polygamy is practiced in some societies, it is illegal in many countries.

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Benefits of recreation
- It helps to correct postural defect
- It provides opportunity for creativity and self expression
- It raises the health and fitness level of the participant

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An indoor recreational activity refers to an activity that can be enjoyed indoors, typically within a building or a closed space. Out of the given options, the only activity that can be considered as an indoor recreational activity is playing chess.
Swimming, hiking, and jogging all take place outdoors and require open spaces like pools, mountains, or parks. These activities involve physical movements in natural or outdoor environments. On the other hand, playing chess is an intellectual and strategic game that can be played indoors. It is usually played on a chessboard and involves planning and outwitting your opponent by moving different chess pieces on the board.
Playing chess can be enjoyed in the comfort of a home, a chess club, or any indoor space that provides a suitable environment to set up the chessboard and focus on the game. It does not require any specific physical fitness level or a large area, making it accessible to people of different ages and abilities.
In conclusion, playing chess is the only indoor recreational activity out of the options given. It is a mentally stimulating game that can be enjoyed indoors without the need for outdoor spaces or physical exertion.

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A field event is a type of athletic competition that takes place in a designated area or field rather than on a track. It involves athletes competing in various events that require physical strength, skill, and technique.
Out of the options provided, javelin throw is the field event. In javelin throw, an athlete throws a long spear-like object called a javelin as far as possible within a marked area. The aim is to achieve the maximum distance with proper technique, accuracy, and strength.
On the other hand, hurdles race, 100m race, and relay race are all track events. In hurdles race, athletes run and jump over a series of hurdles placed at regular intervals on the track. The objective is to complete the race in the shortest possible time while clearing all the hurdles.
In a 100m race, athletes compete to run a distance of 100 meters in the fastest time possible, with the finish line being the determining factor.
A relay race involves a team of runners passing a baton from one runner to another, usually in a circular or linear track. The goal is to complete the race in the shortest time by efficiently transferring the baton between team members.
Therefore, among the options mentioned, only javelin throw can be categorized as a field event as it takes place in a designated area and requires throwing a javelin for distance.

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The first All Africa Games were held in 1965. These games were established by the African Union (AU) as a way to promote unity and solidarity among African nations.
The All Africa Games is a multi-sport event that brings together athletes from all over the African continent. It is held every four years, similar to the Olympic Games.
The purpose of these games is to encourage friendly competition and cooperation among African nations, while also providing a platform for athletes to showcase their talents on an international stage.
The first edition of the All Africa Games took place in Brazzaville, Congo, with athletes from 30 African countries participating in various sports disciplines. These sports included athletics, swimming, boxing, football, basketball, and more.
Since then, the All Africa Games have grown in size and popularity, with more African countries participating in each edition and new sports being added to the program. It has become an important event for African athletes to represent their countries and strive for sporting excellence.

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The part of the human skeleton that forms the helmet to protect the brain is called the cranium. The cranium is made up of several bones that come together to encase and protect the brain. These bones are connected by special joints called sutures which allow for some flexibility and movement.
The cranium serves as a hard, protective shell surrounding the brain, shielding it from any potential injury. It helps absorb and distribute forces, such as those that may occur from impact or trauma to the head. Additionally, the cranium provides attachment points for various muscles and ligaments involved in head movement.
The other options, namely the fibula and tibia, are bones found in the lower limbs and are involved in supporting the body weight and facilitating movement. They are not directly involved in protecting the brain. The suture, on the other hand, is not a specific bone but refers to the tight fibrous joints between the cranial bones that contribute to the strength and structural integrity of the cranium. However, it is not the main component responsible for forming the helmet-like protection for the brain.
In summary, the cranium is the part of the human skeleton that forms the protective helmet around the brain, safeguarding it from potential injuries.