JAMB UTME - Biology - 2008

Ajụjụ 1 Ripọtì

The cell of an onion bulb can be differentiated from a cheek cell by the presence of

plasmalemma

chloroplast

cell wall Azịza ziri ezi

nucleus

Akọwa Nkọwa

Gụọ akwụkwọ nkuzi na Cell Structure (WAEC)

Cell Structure

Lee Azịza

Ajụjụ 2 Ripọtì

Use the diagram above to answer this question.

Which of the organisms is characterized by the possession of a chitinous exoskeleton?

I Azịza ziri ezi

III

Akọwa Nkọwa

Gụọ akwụkwọ nkuzi na Forms In Which Living Cells Exist (WAEC)

Forms In Which Living Cells Exist

Lee Azịza

Ajụjụ 3 Ripọtì

Genetically modified food products have not become universally accepted because

they are not tasty as others produced by conventional means

they are usually costlier than others produced by conventional means

their effects on human consumers is not yet fully understand Azịza ziri ezi

the technology can be applied only in developed countries

Akọwa Nkọwa

Gụọ akwụkwọ nkuzi na Variation In Population (JAMB)

Gụọ akwụkwọ nkuzi na Evidence Of Evolution (JAMB)

Gụọ akwụkwọ nkuzi na Heredity (JAMB)

Variation In Population

Evidence Of Evolution

Heredity

Lee Azịza

Ajụjụ 4 Ripọtì

In the diagram, the part labelled I represents the

stationary phase

lag phase Azịza ziri ezi

log phase

steady phase

Akọwa Nkọwa

The part labelled I in the diagram refers to the "lag phase". The lag phase is the first phase of bacterial growth where the bacteria are adjusting to their new environment, synthesizing new components and increasing in size, but not yet dividing. During this phase, there is little to no increase in the number of bacteria. Once the bacteria have adapted and are ready to divide, they enter the log phase, which is the phase of rapid exponential growth.

Gụọ akwụkwọ nkuzi na Classification (WAEC)

Gụọ akwụkwọ nkuzi na Excretory Systems And Mechanisms; Types Of Excretory Systems (WAEC)

Gụọ akwụkwọ nkuzi na Properties And Functions Of The Living Cell (WAEC)

Gụọ akwụkwọ nkuzi na Respiratory System (WAEC)

Classification

Excretory Systems And Mechanisms; Types Of Excretory Systems

Properties And Functions Of The Living Cell

Respiratory System

Lee Azịza

Ajụjụ 5 Ripọtì

The transmission of impulses along a nerve fibre is characterized by

hormonal and temperature changes

electrical and ionic changes Azịza ziri ezi

hormonal and changes

electrostatic changes

Akọwa Nkọwa

The transmission of impulses along a nerve fibre is characterized by electrical and ionic changes. When a nerve impulse is generated, there is a temporary reversal in the electrical charge across the cell membrane, causing a wave of electrical current to travel along the nerve fibre. This electrical signal opens up voltage-gated ion channels in the membrane, allowing ions to flow in and out of the cell, which creates a flow of electrical current. This ionic exchange produces a new electrical signal in the next section of the membrane, allowing the impulse to travel down the nerve fibre. Therefore, electrical and ionic changes are the main characteristics of the transmission of impulses along a nerve fibre.

Gụọ akwụkwọ nkuzi na Evidence Of Evolution (JAMB)

Gụọ akwụkwọ nkuzi na Nervous Coordination (WAEC)

Evidence Of Evolution

Nervous Coordination

Lee Azịza

Ajụjụ 6 Ripọtì

A plant parenchyma cell also acts as a supporting tissue when it

becomes flaccid

contains crystals

becomes turgid Azịza ziri ezi

is pigmented

Akọwa Nkọwa

When a plant parenchyma cell becomes turgid, it also acts as a supporting tissue. Turgidity refers to the state of the cell when it is fully hydrated and swollen, which causes it to be rigid and provide structural support to the plant. When a plant cell loses water and becomes flaccid, it cannot provide support to the plant. The presence of crystals or pigmentation in the cell does not necessarily affect its ability to act as a supporting tissue.

Lee Azịza

Ajụjụ 7 Ripọtì

An ecological factor that will have the most limiting effects on the abundance of phytoplankton in a turbid pond is

oxygen

light Azịza ziri ezi

temperature

Akọwa Nkọwa

Gụọ akwụkwọ nkuzi na Soil (JAMB)

Gụọ akwụkwọ nkuzi na Relevance Of Biology To Agriculture (WAEC)

Gụọ akwụkwọ nkuzi na Ecological Factors (WAEC)

Gụọ akwụkwọ nkuzi na Ecosystem (WAEC)

Soil

Relevance Of Biology To Agriculture

Ecological Factors

Ecosystem

Lee Azịza

Ajụjụ 8 Ripọtì

In the diagram, the genotypic ratio of the offspring of the cross is

1:2

1:2:1 Azịza ziri ezi

1:1:1:1

3:1

Akọwa Nkọwa

Gụọ akwụkwọ nkuzi na Application Of The Principles Of Heredity (WAEC)

Application Of The Principles Of Heredity

Lee Azịza

Ajụjụ 9 Ripọtì

In the diagram, the part labelled IV indicated that the yeast population has

reached its maximum size Azịza ziri ezi

reached senescence

stopped metabolizing food

started dying

Akọwa Nkọwa

The part labelled IV in the diagram indicates that the yeast population has reached its maximum size. This is because the growth curve of the yeast population reaches a plateau at this point, which suggests that the population has reached its carrying capacity and can no longer sustain further growth.

Gụọ akwụkwọ nkuzi na Co-ordination And Control (JAMB)

Co-ordination And Control

Lee Azịza

Ajụjụ 10 Ripọtì

A characteristic that can possibly be shared by both living and non living organisms is

locomotion

irritability

increase in biomass Azịza ziri ezi

increase in size

Akọwa Nkọwa

Gụọ akwụkwọ nkuzi na Irritability As A Basic Characteristic Of Protoplasm (WAEC)

Irritability As A Basic Characteristic Of Protoplasm

Lee Azịza

Ajụjụ 11 Ripọtì

The bacteria type that are arranged in chains are the

staphylococci

clostidia

streptococci Azịza ziri ezi

basilli

Akọwa Nkọwa

Bacteria are unicellular microorganisms that exist in different shapes and arrangements. Streptococci are a type of bacteria that are arranged in chains, as the name suggests. These bacteria are spherical or oval-shaped and occur in chains due to their mode of cell division. Streptococci are known to cause a variety of infections in humans, including strep throat, pneumonia, and meningitis.

Gụọ akwụkwọ nkuzi na Resources To Be Conserved: Soil, Water, Wildlife, Forest And Minerals (WAEC)

Gụọ akwụkwọ nkuzi na Support And Movement (JAMB)

Resources To Be Conserved: Soil, Water, Wildlife, Forest And Minerals

Support And Movement

Lee Azịza

Ajụjụ 12 Ripọtì

Use the diagram above to answer this question.

The animal represented by l is a

poikilotherm

homoiotherm Azịza ziri ezi

carnivore

herbivore

Akọwa Nkọwa

Lee Azịza

Ajụjụ 13 Ripọtì

In the diagram, the population size of species II on the 20th day is

100

200 Azịza ziri ezi

300

400

Akọwa Nkọwa

The population size of species II on the 20th day is 200. This is because the line representing species II intersects the y-axis at 200, indicating the initial population size, and then crosses the x-axis at the 20th day, showing that the population size has reached zero. Therefore, the population size of species II on the 20th day is 200.

Gụọ akwụkwọ nkuzi na Co-ordination And Control (JAMB)

Co-ordination And Control

Lee Azịza

Ajụjụ 14 Ripọtì

The most abundant group of organisms in the animal kingdom is

mammalia

aves

annelida

insecta Azịza ziri ezi

Akọwa Nkọwa

Lee Azịza

Ajụjụ 15 Ripọtì

Use the diagram above to answer this question.

The vessel that carries blood from l to ll is the

pulmonary artery Azịza ziri ezi

pulmonary vein

carotid artery

jugular vein

Akọwa Nkọwa

The vessel that carries blood from l to ll is the pulmonary artery. This is because the pulmonary artery is the vessel that carries deoxygenated blood from the heart to the lungs, where it gets oxygenated. The oxygenated blood is then carried back to the heart by the pulmonary vein. The carotid artery and jugular vein are not involved in this specific circulation pathway.

Lee Azịza

Ajụjụ 16 Ripọtì

In plants, the structure that performs a similar function with the testis in mammals is the

stigma

filament

anther Azịza ziri ezi

receptance

Akọwa Nkọwa

Gụọ akwụkwọ nkuzi na Humans And Environment (JAMB)

Gụọ akwụkwọ nkuzi na Spirogyra And Rhizopus (WAEC)

Humans And Environment

Spirogyra And Rhizopus

Lee Azịza

Ajụjụ 17 Ripọtì

The main ecological problem facing intertidal organisms is

desiccation

floatation Azịza ziri ezi

salinity

humidity

Akọwa Nkọwa

Lee Azịza

Ajụjụ 18 Ripọtì

Exhaled air differs from inhaled air in that it

less amount of carbon(IV) oxide

is usually lower in temperature

often has more oxygen

usually has more water vapour Azịza ziri ezi

Akọwa Nkọwa

Exhaled air differs from inhaled air in that it usually has more carbon dioxide and more water vapor. When we breathe in, we inhale oxygen and exhale carbon dioxide. The exhaled air also contains moisture from the lungs, which can make it slightly warmer and more humid than the inhaled air. Therefore, the correct option is "usually has more water vapor" and "less amount of oxygen".

Gụọ akwụkwọ nkuzi na Respiratory System (WAEC)

Respiratory System

Lee Azịza

Ajụjụ 19 Ripọtì

The Rhesus factor of blood was first identified in a category of

monkeys Azịza ziri ezi

human females

human males

chimpanzees

Akọwa Nkọwa

The Rhesus factor of blood was first identified in a category of monkeys.

Gụọ akwụkwọ nkuzi na Heredity (JAMB)

Heredity

Lee Azịza

Ajụjụ 20 Ripọtì

Stomata of some plants are sunken and protected by hairs. These are features of

mesophytes

epiphytes

hydrophytes

xerophytes Azịza ziri ezi

Akọwa Nkọwa

Lee Azịza

Ajụjụ 21 Ripọtì

During ovulation, an egg is released from the

corpus luteum

ovarian funnel

graafian follicle Azịza ziri ezi

fallopian tube

Akọwa Nkọwa

Lee Azịza

Ajụjụ 22 Ripọtì

The most important characteristic that makes reptiles to conquer terrestrial habitats is the possession of

long tail

scaly skin

sharp claw

amniotic egg Azịza ziri ezi

Akọwa Nkọwa

The possession of amniotic eggs is the most important characteristic that makes reptiles conquer terrestrial habitats. The amniotic egg is an egg with a protective membrane that allows the embryo to develop in a self-contained aquatic environment, without the need for the egg to be laid in water. This adaptation allows reptiles to lay their eggs on land, which increases their chances of survival since the eggs are protected from water-borne predators. The amniotic egg also allows reptiles to live in areas that are far away from water bodies. This adaptation, therefore, allows reptiles to occupy terrestrial habitats where they can move around freely, hunt, and reproduce.

Gụọ akwụkwọ nkuzi na Plant Nutrition (WAEC)

Plant Nutrition

Lee Azịza

Ajụjụ 23 Ripọtì

In an experiment to determine the percentage of air in a soil sample, the following readings were recorded: volume of water in measuring cylinder = 500 cm3volume of soil added to water = 350 cm3volume of water and soil after stirring = 800 cm3the percentage of air in the soil sample is

6.25% Azịza ziri ezi

10.36%

14.28%

43.28%

Akọwa Nkọwa

volume of air in the soil = (350 + 500) - 800
= 850 - 800 = 50 cm3
% of air in the soil = (volume of air)/total volume x (100)/1 = (50)/800 x 100 = 6.25%

Lee Azịza

Ajụjụ 24 Ripọtì

Use the diagram above to answer this question.

Water reabsorption takes place in

ll and lll

lll and lV Azịza ziri ezi

l and IV

l and lll

Akọwa Nkọwa

Water reabsorption takes place in regions lll and lV of the nephron. The loop of Henle, located in regions l and ll, is responsible for the concentration of the urine by establishing an osmotic gradient in the medulla of the kidney. The collecting duct, located in regions lll and lV, is where the final adjustment of urine concentration occurs, and this is where water is reabsorbed back into the bloodstream. Therefore, the correct answer is lll and lV.

Lee Azịza

Ajụjụ 25 Ripọtì

In the alimentary system of a bird, the function of teeth is carried out by the

crop

beak

gizzard Azịza ziri ezi

tongue

Akọwa Nkọwa

Gụọ akwụkwọ nkuzi na Alimentary System (WAEC)

Alimentary System

Lee Azịza

Ajụjụ 26 Ripọtì

Use the diagram above to answer this question.

From the graph above, it can be appropriately deduced that

the body temperature in ll varies with that in l

the body of temperature in l is independent of external temperature Azịza ziri ezi

l and ll maintain constant body temperature

external temperatures affect the body temperature of l and ll

Akọwa Nkọwa

The graph represents two lines, one for body temperature in "l" and another for body temperature in "ll" over a period of time. The lines fluctuate up and down in response to changes in external temperature. Therefore, it can be appropriately deduced that external temperatures affect the body temperature of l and ll.

Gụọ akwụkwọ nkuzi na Adaptation For Survival (WAEC)

Gụọ akwụkwọ nkuzi na Co-ordination And Control (JAMB)

Adaptation For Survival

Co-ordination And Control

Lee Azịza

Ajụjụ 27 Ripọtì

In a typical freshwater habitat, the edge of the stream or pond constitutes the

tidal zone

intertidal zone

littoral zone Azịza ziri ezi

euphotic zone

Akọwa Nkọwa

The edge of a freshwater habitat, such as a stream or pond, is called the "littoral zone." This is the shallow area where light penetrates all the way to the bottom, allowing aquatic plants to grow and providing habitat for a variety of animals, such as insects, fish, and amphibians. The littoral zone is an important part of the freshwater ecosystem, and plays a crucial role in nutrient cycling and maintaining water quality.

Gụọ akwụkwọ nkuzi na The Cell And Its Environment: Physical And Biophysical Processes (WAEC)

Gụọ akwụkwọ nkuzi na Ecological Factors (WAEC)

The Cell And Its Environment: Physical And Biophysical Processes

Ecological Factors

Lee Azịza

Ajụjụ 28 Ripọtì

Use the diagram above to answer this question.

The type of reproduction illustrated in IV is

sexual

conjugation

binary fission

budding Azịza ziri ezi

Akọwa Nkọwa

The type of reproduction illustrated in IV is budding. Budding is a form of asexual reproduction in which a new individual develops from an outgrowth or bud from the parent organism. In the diagram, a small outgrowth or bud is developing from the parent organism, which will eventually detach and become a new individual. This process is characteristic of organisms like hydra, yeast, and some sponges.

Gụọ akwụkwọ nkuzi na Organization Of Life (WAEC)

Gụọ akwụkwọ nkuzi na Reproduction (JAMB)

Gụọ akwụkwọ nkuzi na Reproduction (Physical Changes In Males And Females) (WAEC)

Organization Of Life

Reproduction

Reproduction (Physical Changes In Males And Females)

Lee Azịza

Ajụjụ 29 Ripọtì

Use the diagram above to answer this question. The male inflorescence is labelled

I Azịza ziri ezi

III

Akọwa Nkọwa

Gụọ akwụkwọ nkuzi na Internal Structure Of A Flowering Plant (JAMB)

Internal Structure Of A Flowering Plant

Lee Azịza

Ajụjụ 30 Ripọtì

In terms of the number of individuals, which of the following taxa is most inclusive?

order

family

class Azịza ziri ezi

species

Akọwa Nkọwa

Among the given options, "class" is the most inclusive taxon in terms of the number of individuals it includes. Taxonomy is the science of naming and classifying living organisms. Organisms are classified into different groups based on their characteristics, and each of these groups is called a taxon. The taxonomic hierarchy consists of several levels or ranks, with each level representing a different degree of similarity and relatedness among the organisms. Starting from the most inclusive to the least inclusive, the taxonomic hierarchy goes like this: kingdom, phylum, class, order, family, genus, and species. The "class" is a higher taxonomic rank or category than "order," "family," or "species." It is a group of related orders, and each class is made up of one or more orders. Thus, a class includes many orders, families, and species. For instance, the class "Mammalia" includes many orders such as primates, carnivores, rodents, and whales, among others. Each of these orders, in turn, includes several families, and each family includes several species. Therefore, "class" is the most inclusive of the given options.

Gụọ akwụkwọ nkuzi na Co-ordination And Control (JAMB)

Co-ordination And Control

Lee Azịza

Ajụjụ 31 Ripọtì

The easiest way to establish the level of pollution in a local stream is to measure the level of

oxygen Azịza ziri ezi

carbon (IV) oxide

ammonia

alkalinity

Akọwa Nkọwa

The easiest way to establish the level of pollution in a local stream is to measure the level of oxygen. Oxygen is essential for the survival of aquatic life, and the presence of pollutants in the water can decrease the amount of dissolved oxygen. By measuring the oxygen level, we can determine if the water is polluted or not. If the oxygen level is low, it indicates that there is pollution in the water, and the quality of the water is poor. Carbon (IV) oxide, ammonia, and alkalinity are also important parameters to measure, but they may not provide a clear indication of pollution as their levels can fluctuate due to natural processes.

Gụọ akwụkwọ nkuzi na Relevance Of Biology To Agriculture (WAEC)

Relevance Of Biology To Agriculture

Lee Azịza

Ajụjụ 32 Ripọtì

Which of the following is used mainly for balancing in fish?

the caudal fin

the pectoral fin

the anal fin

the dorsal fin Azịza ziri ezi

Akọwa Nkọwa

The fin that is mainly used for balancing in fish is the dorsal fin. The dorsal fin is located on the top of the fish's body and helps to keep the fish stable while swimming. It also helps to prevent the fish from rolling over in the water. While the other fins, such as the pectoral, caudal, and anal fins, also assist in swimming and maneuvering, the dorsal fin specifically plays a role in balancing the fish.

Lee Azịza

Ajụjụ 33 Ripọtì

Which of the following associations is an example of mutualism

hydra viridis and zoochlorellae Azịza ziri ezi

human and lice

shark and remora fish

bread and rhizopus stolonifer

Akọwa Nkọwa

The association that is an example of mutualism is hydra viridis and zoochlorellae. In mutualism, both organisms benefit from the relationship. Hydra viridis, a freshwater invertebrate, harbors zoochlorellae, which are single-celled green algae that live inside its cells. The algae produce food through photosynthesis, which benefits both the algae and the hydra. The hydra, in turn, provides a protected environment and nutrients to the algae. Therefore, both organisms benefit from the association, making it an example of mutualism. The other options are not examples of mutualism; they are parasitic or commensal relationships.

Gụọ akwụkwọ nkuzi na Symbiotic Interactions Of Plants And Animals (JAMB)

Symbiotic Interactions Of Plants And Animals

Lee Azịza

Ajụjụ 34 Ripọtì

What will happen wen two equal sized pieces of unripe pawpaw labelled X and Y are dropped into equal volumes of concentrated salt solution and distilled water respectively?

pawpaw X will become turgid

both will increase in size

pawpaw Y will become turgid Azịza ziri ezi

both will decrease in size

Akọwa Nkọwa

Lee Azịza

Ajụjụ 35 Ripọtì

Which of the following is the most advanced evolutionary development in plants?

possession of unicellular structures

development of flowers Azịza ziri ezi

dispersal of spores

development of secondary thickening

Akọwa Nkọwa

The most advanced evolutionary development in plants is the development of flowers. Flowers are the reproductive structures of angiosperms (flowering plants), which are the most diverse and advanced group of plants. Flowers have evolved to attract pollinators, which aid in fertilization and increase genetic diversity. Therefore, the development of flowers is considered an advanced evolutionary adaptation in plants.

Gụọ akwụkwọ nkuzi na Local (Nigerian) Biomes (JAMB)

Gụọ akwụkwọ nkuzi na Variation In Population (JAMB)

Gụọ akwụkwọ nkuzi na Evolution (Theories and Evidence) (WAEC)

Gụọ akwụkwọ nkuzi na Factors Affecting The Distribution Of Organisms (JAMB)

Local (Nigerian) Biomes

Variation In Population

Evolution (Theories and Evidence)

Factors Affecting The Distribution Of Organisms

Lee Azịza

Ajụjụ 36 Ripọtì

The abilty of a chameleon to change its colour is an adaptive future for

attraction

defence Azịza ziri ezi

display

attack

Akọwa Nkọwa

The ability of a chameleon to change its color is an adaptive feature for defense. Chameleons can change their color to blend in with their surroundings, making it harder for predators to spot them. Additionally, they can change their color to reflect their mood or to communicate with other chameleons, but defense is the primary reason for their color-changing ability. By blending in with their environment, chameleons can avoid being seen and increase their chances of survival.

Gụọ akwụkwọ nkuzi na Adaptive Colouration (WAEC)

Adaptive Colouration

Lee Azịza

Ajụjụ 37 Ripọtì

In the diagram, if species i, ii and iii interact in a community, which of the following statement is true?

the population of species ii is growing at a slow rate

the population of species iii has reached its carrying capscity?

the population of species I has become extinct Azịza ziri ezi

the population of species I is always

Akọwa Nkọwa

Gụọ akwụkwọ nkuzi na Ecology Of Population (WAEC)

Gụọ akwụkwọ nkuzi na Factors Affecting The Distribution Of Organisms (JAMB)

Ecology Of Population

Factors Affecting The Distribution Of Organisms

Lee Azịza

Ajụjụ 38 Ripọtì

insectivorous plants traps and kill their prey to derive

phosphorous

calcium

nitrogen Azịza ziri ezi

zinc

Akọwa Nkọwa

Insectivorous plants, as the name suggests, feed on insects. These plants trap and kill insects using different mechanisms, such as sticky surfaces or snap traps. Once the prey is captured, the plant releases enzymes that digest the insect's body and extract nutrients, including nitrogen. Therefore, the correct answer is nitrogen.

Gụọ akwụkwọ nkuzi na Classification (WAEC)

Classification

Lee Azịza

Ajụjụ 39 Ripọtì

Which of the following is a major cause of variation among organisms?

Inbreeding

Backcrossing

Sexual reproduction

Gene dominance Azịza ziri ezi

Akọwa Nkọwa

Gụọ akwụkwọ nkuzi na Heredity (JAMB)

Heredity

Lee Azịza

Ajụjụ 40 Ripọtì

In the diagram, the illustration is a typical example of a plant pollinated by

wind Azịza ziri ezi

man

insects

birds

Akọwa Nkọwa

Lee Azịza

Ajụjụ 41 Ripọtì

The major consequences of bush burning in an ecosystem is

the loss of water

the loss of biological diversity Azịza ziri ezi

a decrease in animal population

an increase in soil fertility

Akọwa Nkọwa

Bush burning has major consequences on an ecosystem, one of which is the loss of biological diversity. This is because bush burning destroys habitats and food sources for organisms, resulting in a decline in their population. Additionally, bush burning can also lead to the loss of soil fertility as it destroys the organic matter that supports plant growth. The burning of plants can also release carbon dioxide into the atmosphere, contributing to climate change. Therefore, bush burning can have significant negative impacts on the environment and should be avoided where possible.

Gụọ akwụkwọ nkuzi na Ecosystem (WAEC)

Ecosystem

Lee Azịza

Ajụjụ 42 Ripọtì

In the mammalian kidney, the Bowman''s capsules is located in the

ureter

pelvis

cortex Azịza ziri ezi

medulla

Akọwa Nkọwa

Gụọ akwụkwọ nkuzi na Excretory Systems And Mechanisms; Types Of Excretory Systems (WAEC)

Gụọ akwụkwọ nkuzi na Natural Habitats (JAMB)

Excretory Systems And Mechanisms; Types Of Excretory Systems

Natural Habitats

Lee Azịza

Ajụjụ 43 Ripọtì

The natural process that produces adaptive evolutionary changes is

Mutation

Gene flow

Genetic drift

Natural selection

Azịza ziri ezi

Akọwa Nkọwa

Natural selection is the natural process that produces adaptive evolutionary changes. It is the process where organisms that are better adapted to their environment are more likely to survive and reproduce, passing on their advantageous traits to their offspring. Over time, this can lead to changes in the frequency of traits within a population, which can result in the development of new species. Therefore, natural selection is a fundamental mechanism of evolution.

Gụọ akwụkwọ nkuzi na Heredity (JAMB)

Heredity

Lee Azịza

Ajụjụ 44 Ripọtì

In a dicotyledonous stem, the zone between the epidermis and the pericycle is the

cortex Azịza ziri ezi

stele

xylem

ploem

Akọwa Nkọwa

The zone between the epidermis and the pericycle in a dicotyledonous stem is known as the cortex. The cortex is composed of several layers of parenchyma cells, which store food and provide mechanical support to the stem. It also contains collenchyma cells, which provide additional support to the stem. The cortex is important for the exchange of gases and water between the stem and the environment.

Gụọ akwụkwọ nkuzi na Nutrition (JAMB)

Gụọ akwụkwọ nkuzi na Morphology Of Monocotyledonous And Dicotyledonous Plants (WAEC)

Nutrition

Morphology Of Monocotyledonous And Dicotyledonous Plants

Lee Azịza

Ajụjụ 45 Ripọtì

The order of passage of food in the digestive system is?

ileum → caecum → large intestine → rectum Azịza ziri ezi

ileum → colon → caecum →rectum

large intestine →ileum → caecum →rectum

colon → caecum → ileum →rectum

Akọwa Nkọwa

Gụọ akwụkwọ nkuzi na Alimentary System (WAEC)

Alimentary System

Lee Azịza

Ajụjụ 46 Ripọtì

A boy who is fond of swimming in a pond finds himself passing urine with traces of blood. He is likely to have contacted

schistosomiasis Azịza ziri ezi

onchocerciasis

poliomyelitis

salmonellosis

Akọwa Nkọwa

Gụọ akwụkwọ nkuzi na Animal Nutrition (WAEC)

Gụọ akwụkwọ nkuzi na Excretory Systems And Mechanisms; Types Of Excretory Systems (WAEC)

Animal Nutrition

Excretory Systems And Mechanisms; Types Of Excretory Systems

Lee Azịza

Ajụjụ 47 Ripọtì

A major adaptive feature of endoparasites is the

loss of the organ of movement

presence of claws

loss of the central nervous system

presence of piercing mouthparts Azịza ziri ezi

Akọwa Nkọwa

The major adaptive feature of endoparasites is the presence of piercing mouthparts. Endoparasites are parasites that live inside the body of their host, and to survive, they need to feed on the host's tissues or blood. The piercing mouthparts allow them to attach themselves to the host's tissues and feed on their fluids. This feature is an adaptation that helps endoparasites to obtain their necessary nutrients from their host while avoiding detection and expulsion by the host's immune system.

Gụọ akwụkwọ nkuzi na Evolution (Theories and Evidence) (WAEC)

Gụọ akwụkwọ nkuzi na Growth (JAMB)

Evolution (Theories and Evidence)

Growth

Lee Azịza

Ajụjụ 48 Ripọtì

Radial symmetry is a future common to

platyhelminthes

nematodes

coelenterates Azịza ziri ezi

arthropods

Akọwa Nkọwa

Radial symmetry is a feature common to coelenterates. Coelenterates are a group of aquatic animals that include jellyfish, coral, and sea anemones. They exhibit radial symmetry, which means their body parts are arranged around a central axis like spokes on a wheel. This allows them to move in any direction and efficiently capture prey from any angle.

Gụọ akwụkwọ nkuzi na Organization Of Life (WAEC)

Gụọ akwụkwọ nkuzi na Classification (WAEC)

Organization Of Life

Classification

Lee Azịza

Ajụjụ 49 Ripọtì

The beak of a duck is structurally adapted for

scooping and sieving food Azịza ziri ezi

catching and grasping food

picking and cracking food

boring and sucking food

Akọwa Nkọwa