WAEC SSCE - Agricultural Science - 2017…

Swali 1 Ripoti

In fish farming, clarias is introduced to a pond stocked with Tilapia in order to

regulate the population for Tilapia

compete with Tilapia for feed

check pests in the pond water Jibu sahihi

regulate the turbidity of the pond water

Maelezo ya Majibu

Soma maelezo ya somo kwenye Fisheries And Wildlife (JAMB)

Fisheries And Wildlife

Tazama Jibu

Swali 2 Ripoti

A social factor which affects land availability and use is

temperature

soil pH

light intensity and duration

culture of the people Jibu sahihi

Maelezo ya Majibu

The social factor that affects land availability and use is the culture of the people. Culture refers to the way of life of a group of people, including their beliefs, customs, and traditions. Different cultures have different practices regarding land ownership, land use, and land distribution. For example, in some cultures, land is communal and is owned by the community as a whole, while in other cultures, land is privately owned and passed down through families. These cultural practices can affect the availability of land for different uses such as agriculture, housing, and recreation. In some cultures, land is primarily used for agricultural purposes, while in others, it may be used for commercial or residential purposes. The culture of the people can also influence the types of crops that are grown, the methods of farming that are used, and the ways in which the land is managed and conserved. Therefore, understanding the cultural practices of a community is crucial in determining how land is used and made available for different purposes.

Soma maelezo ya somo kwenye Roles Of Government And NGOs In Agricultural Development (JAMB)

Soma maelezo ya somo kwenye Soil (WAEC)

Roles Of Government And NGOs In Agricultural Development

Soil

Tazama Jibu

Swali 3 Ripoti

Which of the above illustrated poultry equipment is not used in a brooder house?

I Jibu sahihi

III

Maelezo ya Majibu

Soma maelezo ya somo kwenye Livestock And Fishing Equipment (WAEC)

Livestock And Fishing Equipment

Tazama Jibu

Swali 4 Ripoti

The presence of excess water in the colloids of soil particles is known as

drainage

waterlogging Jibu sahihi

irrigation

leaching

Maelezo ya Majibu

The presence of excess water in the colloids of soil particles is known as waterlogging. When soil has too much water, it can't drain properly, and the excess water fills up the spaces in the soil between particles. This can lead to a lack of oxygen in the soil, which can harm plants and other organisms that depend on the soil. Waterlogging can happen due to factors like heavy rainfall, poor drainage, or a high water table. It's important to manage waterlogging to maintain healthy soil and support healthy plant growth.

Tazama Jibu

Swali 5 Ripoti

The parasite illustrated above obtains nutrients from the host through

osmosis

diffusion Jibu sahihi

capillarity

egestion

Maelezo ya Majibu

The parasite illustrated above obtains nutrients from the host through diffusion. Diffusion is the movement of molecules from an area of high concentration to an area of low concentration. In this case, the parasite absorbs nutrients from the host's body fluids by diffusing across the membrane that separates the parasite from the host. The host's body fluids have a higher concentration of nutrients than the parasite, so the nutrients move from the host to the parasite by diffusion. This allows the parasite to obtain the nutrients it needs to survive and reproduce. Osmosis and capillarity are the movements of fluids, and egestion is the elimination of waste from the body, so they are not the correct answer in this context.

Soma maelezo ya somo kwenye Livestock Management (WAEC)

Livestock Management

Tazama Jibu

Swali 6 Ripoti

In the above diagram, what crop roots are represented?

a legume Jibu sahihi

a cereal

a tuber

a spice

Maelezo ya Majibu

Soma maelezo ya somo kwenye Simple Farm Tools (WAEC)

Soma maelezo ya somo kwenye Common Weeds (WAEC)

Simple Farm Tools

Common Weeds

Tazama Jibu

Swali 7 Ripoti

The diagram above is an illustration of farm implements; The function of the part labelled II is to

make horizontal cuts into the soil

make vertical cuts into the soil

roll over obstacles

remove soil from the disc Jibu sahihi

Maelezo ya Majibu

Soma maelezo ya somo kwenye Farm Tractor (WAEC)

Soma maelezo ya somo kwenye Farm Tools And Equipment (WAEC)

Farm Tractor

Farm Tools And Equipment

Tazama Jibu

Swali 8 Ripoti

Which of the following equipment from the poultry equipments illustrated above could be used in the place of the equipment labelled II in the management of chicks?

Incubator

Feeder

Electric bulb Jibu sahihi

Egg candler

Maelezo ya Majibu

The equipment that could be used in place of the equipment labelled II for the management of chicks is the electric bulb. The electric bulb can be used to provide heat to the chicks, which is essential for their survival and growth during the first few weeks of their life. Chicks need a warm environment, and a temperature of around 95-100°F is required for the first week of their life. The electric bulb can provide this heat and keep the chicks warm and comfortable. On the other hand, the incubator is used for hatching eggs, the feeder is used for providing feed to the chicks, and the egg candler is used to check the quality of eggs by looking inside them with a bright light. Therefore, in summary, the electric bulb is the equipment that can be used in place of equipment II for the management of chicks.

Soma maelezo ya somo kwenye Types And Classification Of Farm Animals (WAEC)

Types And Classification Of Farm Animals

Tazama Jibu

Swali 9 Ripoti

Imported plants are expected to be

vaccinated

improved upon

treated

quarantined Jibu sahihi

Maelezo ya Majibu

Imported plants are expected to go through a process called quarantine. This means that they are kept separate from other plants for a certain period of time to make sure that they are not carrying any diseases or pests that could harm other plants in the local environment. This helps to protect the local plant species and prevent the spread of any harmful organisms.

Soma maelezo ya somo kwenye Livestock And Fishing Equipment (WAEC)

Soma maelezo ya somo kwenye Crop Improvement (WAEC)

Livestock And Fishing Equipment

Crop Improvement

Tazama Jibu

Swali 10 Ripoti

Which of the following practices is an example of a cultural weed control method?

Use of insects

Mowing

Application of herbicides

Mulching Jibu sahihi

Maelezo ya Majibu

Mulching is an example of a cultural weed control method. Mulching is the practice of placing a layer of organic material, such as leaves or straw, over the soil surface to suppress weed growth. The mulch acts as a physical barrier, preventing light from reaching the weed seeds and preventing them from germinating. Additionally, mulch can help retain moisture in the soil and suppress weeds by suppressing the growth of weed seeds that are already present in the soil. This is an example of a cultural weed control method because it does not rely on the use of chemicals or other external inputs and instead relies on natural processes to control weed growth.

Soma maelezo ya somo kwenye Crop Diseases (JAMB)

Crop Diseases

Tazama Jibu

Swali 11 Ripoti

Agricultural extension teaching methods are classified on the basis of

teaching materials

topics to be taught

attitude

audience size Jibu sahihi

Maelezo ya Majibu

Soma maelezo ya somo kwenye Agricultural Extension (JAMB)

Agricultural Extension

Tazama Jibu

Swali 12 Ripoti

Which of the following pairs of diseases attack coffee?

Mosaic and smut

Smut and ridge

Rust and mosaic

Rust and leaf spot Jibu sahihi

Maelezo ya Majibu

The pair of diseases that attack coffee plants is rust and leaf spot. Rust is a fungal disease that appears as yellow-orange spots on the underside of coffee leaves, which can then spread to the upper side of the leaves. Rust can weaken coffee plants and reduce the yield of coffee cherries. Leaf spot is another fungal disease that affects coffee plants. It causes dark spots on the leaves, which can turn yellow or brown over time. Leaf spot can also weaken the coffee plant and reduce the yield of coffee cherries. Mosaic and smut are diseases that do not typically affect coffee plants. Mosaic is a viral disease that affects many crops, including tobacco and maize. Smut is a fungal disease that commonly affects corn, wheat, and sugarcane. Ridge is a bacterial disease that can affect potato plants. Therefore, in summary, the pair of diseases that attack coffee plants are rust and leaf spot.

Soma maelezo ya somo kwenye Crop Diseases (JAMB)

Crop Diseases

Tazama Jibu

Swali 13 Ripoti

In the diagram above showing the digestive tract of a certain farm animal, the digestion of protein starts in the part labelled

I Jibu sahihi

III

Maelezo ya Majibu

Soma maelezo ya somo kwenye Anatomy And Physiology Of Farm Animals (WAEC)

Anatomy And Physiology Of Farm Animals

Tazama Jibu

Swali 14 Ripoti

In the diagram above which shows the digestive tract for a certain farm animal, which of the following enzymes is not secreted by the part labelled III?

Pepsin Jibu sahihi

Amylase

Lipase

Trypsin

Maelezo ya Majibu

The part labelled III in the diagram refers to the small intestine, which is responsible for the majority of nutrient absorption. The small intestine produces several enzymes to help digest food, including amylase, lipase, and trypsin. Pepsin is not produced in the small intestine (part III). Pepsin is actually produced in the stomach (part II) and is responsible for breaking down proteins into smaller peptides. Once the food is mixed with gastric juices in the stomach, it enters the small intestine where other enzymes take over the process of digestion and absorption of nutrients. Therefore, the correct answer is Pepsin.

Soma maelezo ya somo kwenye Anatomy And Physiology Of Farm Animals (WAEC)

Anatomy And Physiology Of Farm Animals

Tazama Jibu

Swali 15 Ripoti

The parts labelled I, II and III of the farm animal parasite above form the

proglottide

rostellum

sucker

scolex Jibu sahihi

Maelezo ya Majibu

The part labelled I is the "scolex", the part labelled II is the "rostellum", and the part labelled III is the "sucker". Together, these parts form the "head" or anterior end of the parasite, known as the "scolex". The scolex is the part of the parasite that attaches to the host's intestinal wall, while the rostellum and sucker are specialized structures that help the parasite attach and feed on the host's blood or nutrients. The proglottide, on the other hand, is a segment of the tapeworm's body that contains reproductive organs and develops behind the scolex.

Soma maelezo ya somo kwenye Main Pests And Parasites Of Farm Animals (WAEC)

Main Pests And Parasites Of Farm Animals

Tazama Jibu

Swali 16 Ripoti

In the diagram above, what kind of identification method is illustrated?

Tagging

Neck chaining

Ear notching

Branding Jibu sahihi

Maelezo ya Majibu

Soma maelezo ya somo kwenye Main Pests And Diseases Of Crops (WAEC)

Main Pests And Diseases Of Crops

Tazama Jibu

Swali 17 Ripoti

Which of the following insect-pests does not attack cotton?

Aphid

Cotton stainer

Weevil Jibu sahihi

Pink bollworm

Maelezo ya Majibu

Soma maelezo ya somo kwenye Crop Pests (JAMB)

Crop Pests

Tazama Jibu

Swali 18 Ripoti

The diagram above is the digestive tract of a farm animal. What farm animal is being referred to?

turkey

cattle

pig Jibu sahihi

goat

Maelezo ya Majibu

Based on the digestive tract diagram provided, the farm animal being referred to is a pig. Pigs have a very unique digestive system that is similar to humans in many ways. Their digestive system is divided into several parts including the mouth, esophagus, stomach, small intestine, large intestine, rectum, and anus. In the diagram, you can see that the digestive tract of the animal has a stomach with four compartments, which is characteristic of pigs. This type of stomach is necessary for breaking down the tough fibrous materials found in plants, which makes up a significant portion of a pig's diet. Furthermore, the length of the small intestine in the pig is relatively long, which is necessary for extracting nutrients from the food that is consumed. Pigs are omnivorous animals, which means that they eat both plants and animals, and their digestive system has evolved to be able to handle a wide range of different types of food. In summary, the digestive tract diagram provided belongs to a pig because of its unique four-chambered stomach and relatively long small intestine, which are essential for breaking down plant materials and extracting nutrients from the food that they consume.

Soma maelezo ya somo kwenye Types And Classification Of Farm Animals (WAEC)

Soma maelezo ya somo kwenye Anatomy And Physiology Of Farm Animals (WAEC)

Types And Classification Of Farm Animals

Anatomy And Physiology Of Farm Animals

Tazama Jibu

Swali 19 Ripoti

In the diagram of farm implements above, which of the labelled parts brings balance to the implements?

III Jibu sahihi

Maelezo ya Majibu

Soma maelezo ya somo kwenye Farm Tools And Equipment (WAEC)

Farm Tools And Equipment

Tazama Jibu

Swali 20 Ripoti

If rows of crops are spaced 1.0m apart with one seed sown per stand, determine the spacing between stands to obtain a plant population of 40,000 plants per hectare.

0.25m Jibu sahihi

0.45m

0.50m

1.00m

Maelezo ya Majibu

To determine the spacing between stands to obtain a plant population of 40,000 plants per hectare, we first need to understand the definition of plant population. Plant population is the number of plants per unit area. In this case, the desired plant population is 40,000 plants per hectare. If the rows of crops are spaced 1.0m apart with one seed sown per stand, then the distance between the plants within a row is not important for determining the plant population per hectare. We can calculate the number of plants per hectare as follows: 40,000 plants/ha = (10,000 m²/ha) x (1 row/1.0 m) x (1 stand/x) Solving for x, we get: x = (10,000 m²/ha) / (40,000 plants/ha) = 0.25 m/stand Therefore, the spacing between stands required to obtain a plant population of 40,000 plants per hectare is 0.25 meters. Hence, the correct answer is 0.25m.

Soma maelezo ya somo kwenye Cropping Systems, Planting Patterns And Plant Density (JAMB)

Cropping Systems, Planting Patterns And Plant Density

Tazama Jibu

Swali 21 Ripoti

Which of the following agents is not involved in agricultural marketing?

commodity boards

money lenders Jibu sahihi

retailers

middlemen

Maelezo ya Majibu

The agent that is not involved in agricultural marketing is money lenders. Agricultural marketing refers to the various activities involved in the buying, selling, and distribution of agricultural products from the point of production to the point of consumption. Commodity boards, retailers, and middlemen are all agents involved in agricultural marketing. Commodity boards are organizations that are set up by the government or private sector to regulate the production, marketing, and distribution of agricultural commodities. They help to ensure that farmers get fair prices for their products and that consumers get quality products. Retailers are businesses that sell agricultural products directly to consumers. They include supermarkets, grocery stores, and farmers' markets. Retailers buy products from farmers and middlemen and sell them to consumers. Middlemen are intermediaries who help to connect farmers with buyers. They include wholesalers, brokers, and commission agents. They buy products from farmers and sell them to retailers or processors. Money lenders, on the other hand, are not involved in agricultural marketing. Money lenders provide loans to farmers, but they do not participate in the buying, selling, or distribution of agricultural products.

Soma maelezo ya somo kwenye Principles Of Farmstead Planning (WAEC)

Soma maelezo ya somo kwenye Soil (WAEC)

Soma maelezo ya somo kwenye Marketing Of Agricultural Produce (JAMB)

Soma maelezo ya somo kwenye Agricultural Finance (WAEC)

Principles Of Farmstead Planning

Soil

Marketing Of Agricultural Produce

Agricultural Finance

Tazama Jibu

Swali 22 Ripoti

A farming in which different types of crops are grown in quick succession, in a definite order on the same piece of land is termed

mixed farming

land rotation

continuous cropping

crop rotation Jibu sahihi

Maelezo ya Majibu

The farming method you're describing is called "crop rotation". It's when farmers grow different types of crops in a specific order, one after the other, on the same piece of land. The idea behind crop rotation is that different crops have different nutrient needs and can also leave different nutrients in the soil. So, by alternating crops, farmers can avoid depleting the soil of specific nutrients and also help to control pests and diseases. For example, one year a farmer may grow corn, which is a heavy feeder that depletes the soil of nitrogen. The next year, they might grow beans, which actually adds nitrogen back to the soil. Then, the following year, they could grow wheat or another crop that doesn't require as much nitrogen. This way, the soil remains healthy and productive. Crop rotation has been practiced for thousands of years and is still used by farmers today as a sustainable and effective farming method.

Soma maelezo ya somo kwenye Cropping Systems, Planting Patterns And Plant Density (JAMB)

Cropping Systems, Planting Patterns And Plant Density

Tazama Jibu

Swali 23 Ripoti

A raw material that could be obtained from the forest is

margarine

honey Jibu sahihi

mutton

butter

Maelezo ya Majibu

A raw material that could be obtained from the forest is honey. Honey is a natural sweetener made by bees from flower nectar. Bees collect the nectar from flowers in the forest and then process it into honey. This means that honey is a product that can be obtained from the forest. Margarine and butter, on the other hand, are made from dairy products which are obtained from cows that are usually raised in farms. Mutton is meat from sheep which are also typically raised in farms rather than the forest.

Soma maelezo ya somo kwenye Fisheries And Wildlife (JAMB)

Soma maelezo ya somo kwenye Forest Management (Silviculture) (JAMB)

Fisheries And Wildlife

Forest Management (Silviculture)

Tazama Jibu

Swali 24 Ripoti

Heat treatment of oil palm seeds before sowing helps to

mobilize nutrients for the embryo

harden the mesocarp

break embryo dormancy Jibu sahihi

improve disease resistance

Maelezo ya Majibu

Heat treatment of oil palm seeds before sowing is known to break the embryo dormancy. Dormancy is a period of inhibited growth that helps the seed to survive adverse environmental conditions. However, it can also prevent the seed from germinating even under favorable conditions. Applying heat to the seed allows it to overcome this dormancy and initiate growth. Breaking the dormancy allows the embryo to start using the stored nutrients in the seed, mobilizing them for growth. This helps in the early establishment of the seedling and improves its chances of survival. Heat treatment can also help to improve disease resistance by killing or removing pathogens that may be present on the seed surface or inside the seed. However, heat treatment does not harden the mesocarp, which is the fleshy outer layer of the fruit surrounding the seed. The mesocarp does not play a significant role in seed germination or early seedling growth.

Soma maelezo ya somo kwenye Farm Inputs (JAMB)

Farm Inputs

Tazama Jibu

Swali 25 Ripoti

The demand for agricultural produce is generally

infinite

inelastic Jibu sahihi

unitary

static

Maelezo ya Majibu

The demand for agricultural produce is generally considered to be inelastic, which means that a change in price does not greatly affect the quantity demanded. This is because, in many cases, people need to buy food regardless of its price, and they may not have many alternative options. For example, if the price of wheat increases, people may still need to buy bread, so they will continue to purchase wheat even though it is now more expensive.

Tazama Jibu

Swali 26 Ripoti

Demand and Supply schedules for Mangoes
Price of fruit (Le)	Supply (No of baskets)	Demand (No of baskets)
1,000.00	10	60
2,000.00	20	50
3,000.00	30	40
4,000.00	40	30
5,000.00	50	20
6,000.00	60	10

At Le 1,000.00, what will be the excess demand over supply of mangoes?

50 baskets Jibu sahihi

40 baskets

20 baskets

10 baskets

Maelezo ya Majibu

At a price of Le 1,000.00, the demand for mangoes is 60 baskets while the supply is only 10 baskets. Therefore, the excess demand over supply of mangoes is 50 baskets. Excess demand occurs when the quantity of a good demanded by consumers exceeds the quantity supplied by producers at a particular price level. In this case, the demand for mangoes at a price of Le 1,000.00 is greater than the amount of mangoes that suppliers are willing and able to sell at that price, resulting in a shortage or excess demand of 50 baskets. This situation can lead to higher prices as consumers are willing to pay more to obtain the desired quantity of mangoes, and producers may increase supply to take advantage of the higher prices. Conversely, if the excess demand persists, some consumers may switch to other substitute fruits, and some producers may switch to producing other fruits, leading to a decrease in the excess demand.

Soma maelezo ya somo kwenye Principles Of Supply (WAEC)

Principles Of Supply

Tazama Jibu

Swali 27 Ripoti

In the carbon cycle, carbon dioxide is used by crops for

photosynthesis Jibu sahihi

transpiration

decomposition

respiration

Maelezo ya Majibu

Carbon dioxide is used by crops for photosynthesis. Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to produce energy in the form of glucose and release oxygen into the atmosphere. The carbon dioxide taken in by the plants is used to build the organic molecules that make up their structure and energy reserves, such as sugars and starches. In this way, plants serve as carbon sinks, removing carbon dioxide from the atmosphere and incorporating it into their biomass. Therefore, carbon dioxide plays a crucial role in the growth and survival of crops and other plants.

Soma maelezo ya somo kwenye Meaning And Scope Of Agriculture (JAMB)

Meaning And Scope Of Agriculture

Tazama Jibu

Swali 28 Ripoti

Above is the illustration of farm implements. The part which makes horizontal cuts into the soil and uproots weeds is labelled as

III

IV Jibu sahihi

Maelezo ya Majibu

Soma maelezo ya somo kwenye Tractor And Animal Drawn Implement (WAEC)

Tractor And Animal Drawn Implement

Tazama Jibu

Swali 29 Ripoti

Which of the following practices is not a way of maintaining ornamental plants?

Pruning

Weeding

Watering

Harvesting Jibu sahihi

Maelezo ya Majibu

The practice that is not a way of maintaining ornamental plants is "harvesting." Harvesting is the process of collecting crops from plants after they have matured. However, ornamental plants are usually grown for their beauty and not for consumption. Therefore, there is usually no need to harvest them. On the other hand, pruning is important for the overall health and appearance of ornamental plants. Weeding is necessary to remove unwanted plants that compete for resources and nutrients with ornamental plants. Watering is important to keep the plants hydrated, and it is essential to the survival and growth of ornamental plants. Therefore, the correct answer is "harvesting."

Soma maelezo ya somo kwenye Common Weeds (WAEC)

Common Weeds

Tazama Jibu

Swali 30 Ripoti

Which of the following statements is not a problem associated with land tenure system through inheritance?

Family members have small land holdings

Family members have right to free use of land Jibu sahihi

Non-family members cannot inherit land

Farm mechanization is restricted

Maelezo ya Majibu

The statement that is not a problem associated with land tenure system through inheritance is "Family members have right to free use of land." Explanation: Land tenure system through inheritance has its own set of problems, but the right to free use of land by family members is not one of them. In fact, it is a common practice in many societies that family members have free use of the land that they inherit. The other three options are problems associated with land tenure system through inheritance. Family members having small land holdings can result in fragmentation of land, which reduces the efficiency of farming. Non-family members not being able to inherit land can lead to social inequality and exclusion of certain groups. Farm mechanization being restricted can limit the use of modern farming technologies and decrease productivity.

Soma maelezo ya somo kwenye Problems Of Agricultural Development And Possible Solutions (WAEC)

Soma maelezo ya somo kwenye Soil (WAEC)

Problems Of Agricultural Development And Possible Solutions

Soil

Tazama Jibu

Swali 31 Ripoti

Which of the following methods of plant propagation is limited to plants which root easily?

Grafting and cutting

Layering and cutting Jibu sahihi

Budding and layering

Grafting and layering

Maelezo ya Majibu

Soma maelezo ya somo kwenye Plant Propagation Methods (JAMB)

Soma maelezo ya somo kwenye Methods Of Propagation Of Horticultural Plants (WAEC)

Plant Propagation Methods

Methods Of Propagation Of Horticultural Plants

Tazama Jibu

Swali 32 Ripoti

In the poultry equipments above, which quality of eggs is associated with the equipment labelled I?

Size

Fertility Jibu sahihi

Colour

Price

Maelezo ya Majibu

Soma maelezo ya somo kwenye Animal Reproduction (WAEC)

Animal Reproduction

Tazama Jibu

Swali 33 Ripoti

Land use for agriculture in West Africa is influenced by the following factors except

topography

population density

fallowing Jibu sahihi

climatic conditions

Maelezo ya Majibu

Land use for agriculture in West Africa is influenced by several factors, including topography, population density, fallowing, and climatic conditions. However, one of these factors does not have a significant influence on land use for agriculture in West Africa, and that is "fallowing." Fallowing refers to the practice of leaving land uncultivated for a period of time to allow it to recover from the depletion of nutrients caused by farming activities. While fallowing can be an essential practice for maintaining soil fertility, it is not a significant factor in determining land use for agriculture in West Africa. On the other hand, topography, population density, and climatic conditions all have a significant influence on land use for agriculture in West Africa. Topography, or the physical features of the land, can impact the type of crops that can be grown and the methods used to cultivate them. Population density affects the availability of land for farming, while climatic conditions such as rainfall and temperature can determine the types of crops that can be grown and the timing of planting and harvesting.

Soma maelezo ya somo kwenye Land And Its Uses (WAEC)

Land And Its Uses

Tazama Jibu

Swali 34 Ripoti

By-products of livestock used as feed ingredients in poultry ration include

hides and hoofs

blood and bones Jibu sahihi

feathers and fur

skin and bones

Maelezo ya Majibu

By-products of livestock used as feed ingredients in poultry ration include blood and bones, feathers and fur, and skin and bones. Blood and bones are a rich source of protein, minerals, and amino acids that are essential for the growth and development of poultry. They are usually obtained from slaughterhouses and are processed into bone meal and blood meal, which are then added to poultry feed. Feathers and fur are also a good source of protein and can be hydrolyzed to release amino acids that can be absorbed by poultry. They are usually obtained from poultry processing plants and are processed into feather meal or poultry by-product meal, which are then added to poultry feed. Skin and bones are another by-product of livestock that can be used as feed ingredients in poultry ration. They are usually obtained from meat processing plants and are processed into meat and bone meal, which are then added to poultry feed. Using these by-products in poultry feed not only helps to reduce waste but also provides a cost-effective source of nutrients for poultry. It also helps to reduce the environmental impact of livestock production by diverting these by-products from landfills and turning them into valuable feed ingredients.

Soma maelezo ya somo kwenye Animal Feeds And Feed Stuffs And Their Local Sources (WAEC)

Soma maelezo ya somo kwenye Major Internal Organs Of Farm Animals (WAEC)

Animal Feeds And Feed Stuffs And Their Local Sources

Major Internal Organs Of Farm Animals

Tazama Jibu

Swali 35 Ripoti

Inhibition of root and fruit formation are deficiency symptoms of

iron

nitrogen

chlorine

phosphorus Jibu sahihi

Maelezo ya Majibu

The deficiency symptom that can inhibit both root and fruit formation is a lack of phosphorus in the plant's soil. Phosphorus is an essential nutrient that plays a vital role in a plant's growth and development. It helps in the formation of strong roots and stimulates the growth of fruits and flowers. When a plant lacks sufficient phosphorus, it can lead to stunted root growth and poor fruit development. In contrast, nitrogen is required for leaf and stem growth, while iron is necessary for chlorophyll synthesis, which gives leaves their green color. Chlorine is important for photosynthesis, but its deficiency symptoms typically manifest as yellowing or wilting of leaves, rather than affecting root and fruit formation.

Soma maelezo ya somo kwenye Main Pests And Parasites Of Farm Animals (WAEC)

Soma maelezo ya somo kwenye Genetics (JAMB)

Main Pests And Parasites Of Farm Animals

Genetics

Tazama Jibu

Swali 36 Ripoti

One advantage of cooperative farming is that it

allows farmers to have small and scattered plots

enables individual farmers to acquire loans from the banks

enables farmers to acquire loans from the bank Jibu sahihi

facilitates the use of local tools

Maelezo ya Majibu

Soma maelezo ya somo kwenye Farm Management (JAMB)

Farm Management

Tazama Jibu

Swali 37 Ripoti

Flood irrigation is used for the cultivation of

water melon

swamp rice Jibu sahihi

oil palm

coconut

Maelezo ya Majibu

Flood irrigation is used for the cultivation of crops like swamp rice. This type of irrigation involves flooding a field with water and allowing it to slowly drain. The field stays submerged for a certain period of time, providing water and nutrients to the rice plants. This method is commonly used in low-lying areas where rice is grown and water is abundant. The flooded field also helps to control weeds and pests, making it an effective and efficient way to grow rice in these conditions.

Soma maelezo ya somo kwenye Irrigation And Drainage (WAEC)

Soma maelezo ya somo kwenye Agricultural Insurance (WAEC)

Irrigation And Drainage

Agricultural Insurance

Tazama Jibu

Swali 38 Ripoti

Which of the following agents is not associated with chemical weathering?

oxidation

pressure Jibu sahihi

hydrolysis

carbonation

Maelezo ya Majibu

The agent that is not associated with chemical weathering is pressure. Chemical weathering is the breakdown or decomposition of rocks and minerals caused by chemical reactions with substances such as water, oxygen, and acids. Oxidation is the process where oxygen reacts with a substance and changes its chemical composition, resulting in the breakdown of rocks and minerals. Hydrolysis is the process where water reacts with minerals and rocks and causes them to break down. Carbonation is a chemical reaction where carbon dioxide reacts with water to form carbonic acid, which can dissolve minerals in rocks, resulting in their breakdown. However, pressure is a physical weathering agent that causes rocks to break down through physical forces, such as compression or tension, rather than chemical reactions. Examples of physical weathering agents include water, wind, and ice. These agents can cause rocks to break down into smaller pieces without changing their chemical composition. Therefore, pressure is not associated with chemical weathering, but rather with physical weathering.

Soma maelezo ya somo kwenye Rocks And Soil Formation (JAMB)

Soma maelezo ya somo kwenye Rocks (WAEC)

Rocks And Soil Formation

Rocks

Tazama Jibu

Swali 39 Ripoti

A farmer collects 800 eggs from a laying stock of 1,200 birds per day. Determine the laying percentage of the birds

150%

67% Jibu sahihi

50%

33%

Maelezo ya Majibu

To determine the laying percentage of the birds, we need to find the proportion of eggs laid by each bird in a day. If we divide the total number of eggs collected (800) by the number of birds (1,200), we get the average number of eggs per bird in a day: 800 eggs ÷ 1,200 birds = 0.67 eggs per bird To convert this to a percentage, we can multiply by 100: 0.67 eggs per bird × 100 = 67% laying percentage Therefore, the laying percentage of the birds is 67%.

Soma maelezo ya somo kwenye Reproduction In Farm Animals (JAMB)

Reproduction In Farm Animals

Tazama Jibu

Swali 40 Ripoti

A farmland measures 50m x 50m. Determine its area in hectares.

25ha

2.5ha

0.25ha Jibu sahihi

0.025ha

Maelezo ya Majibu

To determine the area of a farmland in hectares, we first need to calculate its area in square meters. A farmland that measures 50m x 50m has an area of 50m x 50m = 2500m^2. Next, we need to convert square meters to hectares. One hectare is equal to 10,000 square meters. To convert square meters to hectares, we divide the number of square meters by 10,000. So, 2500m^2 / 10,000 = 0.25 hectares. Therefore, the area of the farmland is 0.25 hectares.

Soma maelezo ya somo kwenye Meaning And Scope Of Agriculture (JAMB)

Meaning And Scope Of Agriculture

Tazama Jibu

Swali 41 Ripoti

Predators are used by farmers to

control pests Jibu sahihi

induce flowering in plants

protect the soil

hasten fruit ripening

Maelezo ya Majibu

Farmers use predators to control pests. Predators are animals that naturally eat or kill other animals, and when they are introduced into a crop or garden, they can help to reduce the population of pests that can damage or destroy the plants. This approach is a form of biological pest control, which aims to use natural predators or other living organisms to control pests, rather than relying on chemical pesticides that can harm the environment and human health. By using predators, farmers can reduce their dependence on pesticides and create a more sustainable and eco-friendly approach to farming.

Soma maelezo ya somo kwenye Crop Pests (JAMB)

Soma maelezo ya somo kwenye Major Internal Organs Of Farm Animals (WAEC)

Crop Pests

Major Internal Organs Of Farm Animals

Tazama Jibu

Swali 42 Ripoti

Which of the following statements is not correct about soil texture?

Soils with fine particles have higher water holding capacity than coarse soils

Fine-textured soils are warm soils and coarse-textured soils are cool soils Jibu sahihi

The effect of leaching in coarse-textured soils is greater than that in fine-textured soils

Fine-textured soils have higher nutrient holding capacity than coarse-textured soils.

Maelezo ya Majibu

The statement that is not correct about soil texture is: "Fine-textured soils are warm soils and coarse-textured soils are cool soils." Soil texture refers to the composition of soil in terms of the relative proportion of sand, silt, and clay particles. The four options are related to different properties of soil texture. The first statement is correct; soils with fine particles have a higher water holding capacity than coarse soils. This is because fine-textured soils have more surface area per unit of volume, which allows them to hold more water. The third statement is also incorrect. Leaching is the process by which water moves through the soil and carries nutrients with it. Coarse-textured soils have larger pores, which allow water to move through them more quickly, resulting in a greater loss of nutrients through leaching than in fine-textured soils. The fourth statement is correct; fine-textured soils have a higher nutrient holding capacity than coarse-textured soils. This is because the smaller particles in fine-textured soils have more surface area to which nutrients can attach. In contrast, the second statement is the one that is not correct. Soil texture does not necessarily determine the temperature of the soil. Soil temperature is influenced by many factors, including climate, vegetation cover, and the depth of the soil. Soil color, organic matter content, and moisture also affect soil temperature. Therefore, it is incorrect to assume that fine-textured soils are always warm and coarse-textured soils are always cool.

Tazama Jibu

Swali 43 Ripoti

The branch of agriculture which deals with the production of fruits is called

pomology Jibu sahihi

olericulture

floriculture

oenology

Maelezo ya Majibu

The branch of agriculture which deals with the production of fruits is called pomology. Pomology is the study and cultivation of fruit trees and fruits including apples, pears, peaches, plums, cherries, and citrus. Pomologists work to improve fruit quality, yield, and disease resistance. They also develop new varieties of fruit trees that are more resistant to pests and diseases, and can tolerate different climates and soil types. In summary, pomology is the study and cultivation of fruits, and it is a branch of agriculture that focuses on the production of fruit crops.

Soma maelezo ya somo kwenye Husbandry Of Selected Crops (WAEC)

Husbandry Of Selected Crops

Tazama Jibu

Swali 44 Ripoti

The correct sequence of pre-planting operations in

\(clearing \to stumping \to ploughing \to harrowing\) Jibu sahihi

\(stumping \to ploughing \to harrowing \to clearing\)

\(bulldozing \to harrowing \to stumping \to ploughing\)

\(clearing \to bulldozing \to stumping \to harrowing\)

Maelezo ya Majibu

The correct sequence of pre-planting operations is: clearing, stumping, ploughing, and harrowing. 1. Clearing: This step involves removing any weeds, bushes, or trees from the area where the crops will be planted. This ensures that the soil is free of any obstacles that might interfere with the planting process. 2. Stumping: After clearing, the remaining tree stumps are removed from the soil using a stump grinder or other methods. This helps to level the field and prepare the soil for the next step. 3. Ploughing: In this step, the soil is turned over using a plough. This helps to break up the soil and mix in any organic matter, such as compost or manure, to improve soil fertility. 4. Harrowing: The final step involves using a harrow to break up any clumps of soil, creating a smooth and even surface for planting. This also helps to mix in any added fertilizer, ensuring that it is evenly distributed throughout the soil. By following this sequence, the soil is properly prepared for planting, providing the best conditions for crop growth and development.

Soma maelezo ya somo kwenye Preparation Of Seedbeds, Fertilizer Application, Mulching, Use of Pesticides, Watering etc. (WAEC)

Soma maelezo ya somo kwenye Land Preparation And Soil Tillage (JAMB)

Soma maelezo ya somo kwenye Maintenance Practices And Precautionary Measures (WAEC)

Soma maelezo ya somo kwenye Agricultural Insurance (WAEC)

Preparation Of Seedbeds, Fertilizer Application, Mulching, Use of Pesticides, Watering etc.

Land Preparation And Soil Tillage

Maintenance Practices And Precautionary Measures

Agricultural Insurance

Tazama Jibu

Swali 45 Ripoti

The practice of mating closely related animals is called

cross breeding

hybridization

in-breeding Jibu sahihi

out-breeding

Maelezo ya Majibu

The practice of mating closely related animals is called in-breeding. In-breeding is when animals who are closely related to each other, such as siblings or parent-offspring, are bred together. This can increase the likelihood of genetic disorders and other health problems in offspring, as well as reduce overall genetic diversity. It is generally not recommended in animal breeding programs and is only done in certain circumstances, such as when attempting to preserve a rare breed.

Soma maelezo ya somo kwenye Reproduction In Farm Animals (JAMB)

Soma maelezo ya somo kwenye Plant Forms And Functions (JAMB)

Soma maelezo ya somo kwenye Animal Improvement (WAEC)

Soma maelezo ya somo kwenye Animal Feeds And Feed Stuffs And Their Local Sources (WAEC)

Soma maelezo ya somo kwenye Genetics (JAMB)

Reproduction In Farm Animals

Plant Forms And Functions

Animal Improvement

Animal Feeds And Feed Stuffs And Their Local Sources

Genetics

Tazama Jibu

Swali 46 Ripoti

From the illustration of farm implements above, the part labelled I is called

disc

beam Jibu sahihi

disc scraper

plough share

Maelezo ya Majibu

Soma maelezo ya somo kwenye Farm Tools And Equipment (WAEC)

Farm Tools And Equipment

Tazama Jibu

Swali 47 Ripoti

Subsidies are given to farmers in the form of

reduced prices of inputs Jibu sahihi

provision of social infrastructure

high tariff on imported inputs

short term loans

Maelezo ya Majibu

Soma maelezo ya somo kwenye Soil (WAEC)

Soil

Tazama Jibu

Swali 48 Ripoti

A breeding method which involves the production of heterozygous populations from homozygous lines is

inbreeding Jibu sahihi

introduction

selection

hybridization

Maelezo ya Majibu

Soma maelezo ya somo kwenye Maintenance Practices And Precautionary Measures (WAEC)

Soma maelezo ya somo kwenye Genetics (JAMB)

Maintenance Practices And Precautionary Measures

Genetics

Tazama Jibu

Swali 49 Ripoti

Insect-pests of crops could be controlled by

cover-cropping

mulching

crop rotation Jibu sahihi

organic manuring

Maelezo ya Majibu

Soma maelezo ya somo kwenye Crop Diseases (JAMB)

Soma maelezo ya somo kwenye Crop Pests (JAMB)

Soma maelezo ya somo kwenye Cropping Systems, Planting Patterns And Plant Density (JAMB)

Crop Diseases

Crop Pests

Cropping Systems, Planting Patterns And Plant Density

Tazama Jibu

Swali 50 Ripoti

The following are climatic conditions affecting agricultural production except

rainfall

relative humidity

temperature

topography Jibu sahihi

Maelezo ya Majibu

The climatic condition that does not affect agricultural production is topography. Topography refers to the physical features of the land, such as its elevation, slope, and shape, which can affect factors such as water drainage and soil quality. While topography can have indirect effects on agriculture, such as by influencing the amount and distribution of rainfall, it is not a direct climatic factor like rainfall, relative humidity, and temperature. Rainfall is important because it provides the necessary water for crops to grow, while relative humidity and temperature affect the rate of evaporation and transpiration, which determine the water requirements of crops. Extreme temperatures and low relative humidity can lead to water stress and reduce crop yields. Therefore, farmers need to understand the climatic conditions in their region to make informed decisions about what crops to plant, when to plant them, and how to manage them throughout the growing season.

Tazama Jibu






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WAEC SSCE - Agricultural Science - 2017 (Objective)