WAEC SSCE - Agricultural Science - 2019…

Question 1 Report

An advantage of communal land tenure system is that it?

encourages use of land for permanent projects by individuals

makes land cheap to acquire Correct answer

leads to fragmentation

does not promote farm mechanization

Answer Details

View Answer

Question 2 Report

Study and answer this question

The soil horizon that is not supportive of the growth of tree crops is?

horizonA.

horizonB

horizonC

horizonD Correct answer

Answer Details

The soil horizon that is not supportive of the growth of tree crops is the one that is not suitable for the growth and development of the roots of the trees. This can be due to several reasons, such as being too shallow, too rocky, too dry, or having poor drainage. In general, tree crops need a deep and well-drained soil to grow strong and healthy roots. A soil that is shallow or has poor drainage can lead to water-logged roots, which can cause the tree to become stunted or even die. Similarly, soil that is too rocky or dry may not have enough nutrients and moisture for the roots to grow, leading to poor tree growth. Therefore, the soil horizon that is not supportive of the growth of tree crops is the one that does not provide the right conditions for the roots to grow and develop.

Read lesson note on Soil (WAEC)

Soil

View Answer

Question 3 Report

The type of rock formed from accumulation of materials transported by water is called?

sedimentary rock Correct answer

igneous rock

metamorphic rock

plutonic rock

Answer Details

Sedimentary rock is a type of rock that is formed from the accumulation of materials that have been transported by water, wind, or ice and then deposited. Over time, these deposits build up and get compressed, which eventually turns them into solid rock. Some examples of sedimentary rock include sandstone, limestone, and shale. This type of rock is important because it often contains important information about the environment and climate of the past.

Read lesson note on Soil Profile (WAEC)

Soil Profile

View Answer

Question 4 Report

A socio-cultural factor affecting land availability is?

soil type

religion Correct answer

topography

mining

Answer Details

Land availability is affected by various socio-cultural factors, such as religion, social norms, and traditional beliefs. For example, in some cultures, land is considered a sacred resource and cannot be bought or sold. This can limit land availability, particularly in areas where these cultural beliefs are prevalent. Therefore, the correct option is religion, as it is a socio-cultural factor that can affect land availability. Soil type, topography, and mining are environmental and economic factors that can affect land availability, but they are not directly related to socio-cultural factors.

Read lesson note on Soil (WAEC)

Soil

View Answer

Question 5 Report

A biotic factor affecting agricultural production is?

rainfall

predator Correct answer

humidity

temperature

Answer Details

A biotic factor refers to a living component of an ecosystem that affects other organisms in that ecosystem. In the context of agricultural production, biotic factors can include pests, diseases, and predators. Out of the given options, the biotic factor affecting agricultural production is the predator. Predators such as insects, rodents, and birds can feed on crops and cause significant damage to agricultural production. Farmers have to implement measures such as installing nets or using pesticides to protect their crops from predators. While rainfall, humidity, and temperature are important abiotic factors that can also affect agricultural production, they are not considered biotic factors as they are not living components of the ecosystem.

Read lesson note on Soil (WAEC)

Soil

View Answer

Question 6 Report

The growing of only one crop on a piece of land from year to year is known as?

mixed cropping

crop rotation

monoculture Correct answer

shifting cultivation

Answer Details

The growing of only one type of crop on a piece of land repeatedly year after year is called monoculture. This farming practice involves planting the same crop in the same area each year, without changing the crop species or rotating with different crops. Monoculture has several advantages, such as allowing farmers to specialize in one crop and therefore increasing efficiency and yield, but it also has significant disadvantages, including depleting soil nutrients, increasing pest and disease pressure, and reducing biodiversity. Farmers often use chemical fertilizers and pesticides to compensate for these problems, leading to environmental and health concerns.

Read lesson note on Animal Feeds And Feed Stuffs And Their Local Sources (WAEC)

Read lesson note on Cropping Systems, Planting Patterns And Plant Density (JAMB)

Animal Feeds And Feed Stuffs And Their Local Sources

Cropping Systems, Planting Patterns And Plant Density

View Answer

Question 7 Report

Vegetative growth in fish ponds?

makes fish movements easy

regulates water acidity

increases pond water turbidity

moderates pond temperature Correct answer

Answer Details

Vegetative growth in fish ponds refers to the growth of plants and algae in the pond water. This type of growth can have several effects on the environment of the pond and the fish living in it. First, the growth of plants and algae can provide shade and shelter for the fish, making their movements easier. The plants and algae also help regulate the acidity of the water, which is important for the health of the fish. Second, the growth of these organisms can increase the turbidity of the pond water, which means that it can become cloudier. This can be beneficial for some species of fish, as it provides them with more hiding places and can reduce the amount of light reaching the bottom of the pond, which can limit the growth of undesirable plants. Finally, the growth of plants and algae in the pond can also moderate the temperature of the water. This is important because fish are cold-blooded animals and their metabolism is affected by changes in water temperature. The plants and algae can help keep the water temperature stable, which is beneficial for the health and growth of the fish.

Read lesson note on Fisheries And Wildlife (JAMB)

Read lesson note on Routine Management Practices In Farm Animals (WAEC)

Read lesson note on Forest Management (WAEC)

Fisheries And Wildlife

Routine Management Practices In Farm Animals

Forest Management

View Answer

Question 8 Report

The data for feed consumption and weight gain of our four farm animals labelled P,Q,R and S are shown below.

Use the data to answer this question correctly

P: 50kg feed consumed and 20kg weight gained.

Q: 90kg feed consumed and 30kg weight gained.

R: 100kg feed consumed and 25kg weight gained.

S: 150kg feed consumed and 30kg weight gained.

The feed conversion efficiency of the poorest weight gainer is?

0.40

0.33

0.25

0.20 Correct answer

Answer Details

Read lesson note on Animal Feeds And Feed Stuffs And Their Local Sources (WAEC)

Read lesson note on Animal Reproduction (WAEC)

Animal Feeds And Feed Stuffs And Their Local Sources

Animal Reproduction

View Answer

Question 9 Report

The main function of the part labelled I is?

temporary storage of food Correct answer

production of digestive enzymes

crushing of food particles

transportation of food nutrients

Answer Details

Read lesson note on Animal Reproduction (WAEC)

Animal Reproduction

View Answer

Question 10 Report

Which of the following hormones is responsible for oestrus in farm animals?

oxytocin

oestrogen Correct answer

prolactin

progesterone

Answer Details

The hormone responsible for oestrus in farm animals is oestrogen. Oestrus is a term used to describe the period of time when a female animal is sexually receptive and fertile. During this time, the levels of oestrogen in the animal's body increase, which triggers a series of physiological changes, including an increase in sexual behavior and a swelling of the reproductive organs. This signals to male animals that the female is ready to mate, and helps to ensure successful fertilization. So, in simple terms, oestrogen is the hormone that causes the female animal to go into heat and become fertile.

Read lesson note on Animal Reproduction (WAEC)

Animal Reproduction

View Answer

Question 11 Report

Which of the following problems are associated with agricultural marketing in West Africa? I.seasonality of produce II.Transportation of produce III.Access to credit

I and II only

I and III only Correct answer

II and III only

I, ll and III

Answer Details

Read lesson note on Marketing Of Agricultural Produce (JAMB)

Read lesson note on Agricultural Finance (WAEC)

Marketing Of Agricultural Produce

Agricultural Finance

View Answer

Question 12 Report

In animal production, immature spermatozoa are stored in the?

urethra

scrotum

epididymis Correct answer

prostrate gland

Answer Details

In animal production, immature spermatozoa are stored in the epididymis. The epididymis is a long, coiled tube located at the back of the testes, where spermatozoa mature and are stored. It connects the testes to the vas deferens, which carries sperm to the urethra and out of the body during ejaculation. The urethra is a tube that carries urine and semen out of the body through the penis. It does not play a role in sperm storage. The scrotum is a sac that holds the testes, which produce sperm. It provides the right temperature for sperm production, but it does not store mature sperm. The prostate gland is a small gland located near the bladder, which produces a fluid that nourishes and protects sperm. However, it does not play a role in sperm storage either. Therefore, the correct answer is the epididymis, which is where immature spermatozoa are stored in animal production.

Read lesson note on Livestock Management (WAEC)

Livestock Management

View Answer

Question 13 Report

Which of the following statements are advantages of mulching? it I.Controls weeds II.Conserves soil moisture. III.Increases soil temperature. IV.Reduces soil pH.

I and II Correct answer

I and III

II and IV

III and IV

Answer Details

The following statements are advantages of mulching: I. Controls weeds II. Conserves soil moisture Mulching involves covering the soil surface around plants with a layer of organic material such as leaves, grass, straw, or wood chips. The organic material acts as a barrier that blocks sunlight from reaching weed seeds, preventing them from germinating and growing. Therefore, mulching can help control weeds naturally without the use of chemicals. Mulch also helps to conserve soil moisture by reducing evaporation from the soil surface. It helps to retain moisture by slowing down water loss from the soil through evaporation. As a result, plants can access the water they need for growth and development, and water is used more efficiently. However, mulching does not increase soil temperature or reduce soil pH. In fact, mulching can help to moderate soil temperature by keeping the soil cooler in hot weather and warmer in cool weather. Mulching does not have a direct impact on soil pH either. Therefore, the correct answer is: I and II.

Read lesson note on Genetics (JAMB)

Read lesson note on Growth, Development And Reproduction (JAMB)

Genetics

Growth, Development And Reproduction

View Answer

Question 14 Report

Study and answer this question below

A periodic maintenance activity carried out on the illustrated farm machinery is?

checking the radiator water

checking for tyre pressure

changing engine oil Correct answer

cleaning after use

Answer Details

Read lesson note on Tractor And Animal Drawn Implement (WAEC)

Read lesson note on Farm Tools And Equipment (WAEC)

Tractor And Animal Drawn Implement

Farm Tools And Equipment

View Answer

Question 15 Report

Which of the following mineral elements is essential for chlorophyll formation?

calcium

boron

sodium

magnesium Correct answer

Answer Details

Magnesium is essential for chlorophyll formation. Chlorophyll is a green pigment found in plants that plays a crucial role in photosynthesis, the process by which plants make their own food. Magnesium is a central component of chlorophyll molecules, and without it, chlorophyll cannot be produced. This means that plants with a magnesium deficiency will have stunted growth and yellowing leaves, as chlorophyll is necessary for the plant to perform photosynthesis and produce energy.

Read lesson note on Genetics (JAMB)

Genetics

View Answer

Question 16 Report

During the production of palm oil, the oil palm fruits are boiled in order to?

harden the kernel

prevent high level of oil rancidity

extract oil from the palm fruit

separate mesocarp from endocarp Correct answer

Answer Details

View Answer

Question 17 Report

Sexual propagation of omamental plants involves the use of?

stems

seeds Correct answer

suckers

rhizomes

Answer Details

Sexual propagation of ornamental plants involves the use of seeds. Propagation is the process of creating new plants from existing ones. Sexual propagation is one of the two main methods of plant propagation, the other being asexual propagation. Sexual propagation involves the use of seeds to produce new plants. Seeds are the reproductive structures of plants that contain an embryo and a supply of nutrients for the new plant. They are produced when the male and female parts of a flower come together and fertilization occurs. The resulting seeds can be planted in soil, where they will germinate and grow into new plants. Sexual propagation has the advantage of producing genetically diverse offspring, which can lead to new and unique plant varieties. It is also a natural way for plants to propagate themselves in the wild. In summary, sexual propagation of ornamental plants involves the use of seeds, which are the reproductive structures of plants that contain an embryo and a supply of nutrients for the new plant.

Read lesson note on Plant Propagation Methods (JAMB)

Read lesson note on Methods Of Propagation Of Horticultural Plants (WAEC)

Plant Propagation Methods

Methods Of Propagation Of Horticultural Plants

View Answer

Question 18 Report

A disadvantage of farm mechanization?

efficiency in farming

displacement of farm workers Correct answer

reduction in health hazards

timeliness of farm operations

Answer Details

One disadvantage of farm mechanization is the displacement of farm workers. As farms become more automated and rely on machines to perform tasks that were once done by hand, there is less need for human labor. This can lead to job loss and unemployment in rural communities that depend on agriculture for their livelihoods. Additionally, the loss of jobs can result in a decline in the quality of life for farmers and their families, as they may be forced to move to urban areas in search of work. This can have negative impacts on the social fabric and economic stability of rural communities.

Read lesson note on Agricultural Mechanization (WAEC)

Agricultural Mechanization

View Answer

Question 19 Report

The least important factor for successful incubation of eggs is?

light Correct answer

temperature

ventilation

humidity

Answer Details

All of the factors listed are important for successful incubation of eggs, but if we had to choose the least important factor, it would be light. While some species of birds may require specific lighting conditions for successful incubation, many birds do not require any specific lighting at all. Temperature is a crucial factor because eggs need to be kept at a consistent temperature for proper development. Ventilation is also important because it helps to regulate the exchange of oxygen and carbon dioxide, which is necessary for the growth of the embryo inside the egg. Humidity is also crucial because it helps to prevent the egg from drying out and ensures proper moisture levels for the embryo. In summary, while light can be important for some species, it is generally less important than temperature, ventilation, and humidity for successful incubation of eggs.

Read lesson note on Growth, Development And Reproduction (JAMB)

Growth, Development And Reproduction

View Answer

Question 20 Report

The growth of both trees and arable crops on the same piece of land is?

ley farming

mixed farming

forestry

taungya system Correct answer

Answer Details

Read lesson note on Forest Management (Silviculture) (JAMB)

Forest Management (Silviculture)

View Answer

Question 21 Report

A major storage pest of cereals in West Africa is?

stem borer

weevil Correct answer

bird

army worm

Answer Details

The major storage pest of cereals in West Africa is the weevil. Weevils are small, brown beetles that lay their eggs in grain kernels. When the eggs hatch, the larvae feed on the grain, causing damage and reducing its quality. Weevils are particularly problematic in warm and humid environments, which are common in West Africa. They can infest a wide range of grains, including rice, maize, and millet. Infested grains can also attract other pests such as rats and birds, which can further damage the stored grains. Therefore, it is important to take measures to prevent and control weevil infestations in cereal storage in West Africa.

Read lesson note on Main Pests And Parasites Of Farm Animals (WAEC)

Read lesson note on Crop Diseases (JAMB)

Main Pests And Parasites Of Farm Animals

Crop Diseases

View Answer

Question 22 Report

A major characteristic of mass teaching method of agricultural extension is that?

information can be directed to a large number of people at different locations

it demonstrates how to carry out new techniques to farmers in the same locality Correct answer

feedback is readily available to extension officers

it summarizes and analyses what had been done in previous learning situations

Answer Details

Read lesson note on Agricultural Extension (JAMB)

Agricultural Extension

View Answer

Question 23 Report

Which of the following statement about land is not correct?

its supply is limited

it is used for agricultural production

it is subject for depreciation

it can be relocated Correct answer

Answer Details

The statement that "it can be relocated" is not correct. Land is a finite and immovable resource, meaning it cannot be relocated. It is a natural resource that is situated in a specific location and cannot be moved to another location. This is why the location of land is so important in real estate, as it affects the value and use of the land.

Read lesson note on Soil (WAEC)

Soil

View Answer

Question 24 Report

Liquid fertilizers and pesticides could be applied through?

furrow irrigation

channel irrigation

sprinkler irrigation Correct answer

flood irrigation

Answer Details

Read lesson note on Irrigation And Drainage (WAEC)

Read lesson note on Fish Harvesting And Preservation (WAEC)

Read lesson note on Harvesting, Processing And Storage Equipment (WAEC)

Read lesson note on Methods Of Propagation Of Horticultural Plants (WAEC)

Irrigation And Drainage

Fish Harvesting And Preservation

Harvesting, Processing And Storage Equipment

Methods Of Propagation Of Horticultural Plants

View Answer

Question 25 Report

Corns, rhizomes and tubers are examples of?

underground roots

underground stems Correct answer

aerial stems

modified leaves

Answer Details

Corns, rhizomes and tubers are examples of underground stems. Stems are the part of the plant that supports leaves, flowers, and fruits. They also transport water, nutrients and sugars from the roots to other parts of the plant. Some plants have stems that grow underground, which are called underground stems. Corns, rhizomes, and tubers are all examples of underground stems. Corns are thickened underground stems that store food for the plant. They are commonly found in grasses like corn, wheat, and barley. Rhizomes are horizontal underground stems that produce roots and shoots at their nodes. They can grow new plants and help the plant spread quickly. Ginger and turmeric are examples of plants that have rhizomes. Tubers are enlarged, fleshy underground stems that store food for the plant. They often have buds, or "eyes," that can sprout new plants. Potatoes are the most well-known example of tubers. In summary, corns, rhizomes, and tubers are all types of underground stems that allow plants to store food and propagate themselves.

Read lesson note on Farm Machinery And Implements (JAMB)

Read lesson note on Methods Of Propagation Of Horticultural Plants (WAEC)

Read lesson note on Husbandry Of Selected Crops (WAEC)

Farm Machinery And Implements

Methods Of Propagation Of Horticultural Plants

Husbandry Of Selected Crops

View Answer

Question 26 Report

Which of the following groups of organisms are parasites plants?

nematode, fungus and bacterium

Striga, nematode and dodder

Dodder, fungus and striga Correct answer

Mistletoe, fungus and bacterium

Answer Details

View Answer

Question 27 Report

Which of the following statements best describes commercial farming?

production of plants and animals for family consumption

large scale agricultural production for sale Correct answer

large scale agricultural production for family consumption

use of family labour for large scale agricultural production

Answer Details

Commercial farming is the large scale agricultural production for sale. This means that farmers grow crops or raise animals on a big scale with the intention of selling them to others for a profit. The crops and animals are not just grown for the farmer's own family to consume, but rather to be sold to the market. This type of farming is different from a small family farm, where the focus is on producing food for the family's own consumption, and not necessarily for sale.

View Answer

Question 28 Report

If maize seed is sown at a spacing of 100cm x 50cm, determine the expected maize plant population per hectare?

40,000

20,000 Correct answer

5,000

2,000

Answer Details

To determine the expected maize plant population per hectare, we need to convert the given spacing from centimeters to meters, as the hectare is a unit of area in meters. 100cm x 50cm is equivalent to 1m x 0.5m. So the area required per maize plant is 0.5 square meters. Now, to find the number of plants per hectare (which is 10,000 square meters), we divide the total area by the area required per plant: 10,000 sq m / 0.5 sq m per plant = 20,000 plants per hectare. Therefore, the expected maize plant population per hectare is 20,000.

Read lesson note on Cropping Systems, Planting Patterns And Plant Density (JAMB)

Cropping Systems, Planting Patterns And Plant Density

View Answer

Question 29 Report

Biological control of insect-pests of crops is carried out through?

crop rotation

use of predators Correct answer

use of pesticides

farm sanitation

Answer Details

Read lesson note on Principles Of Supply (WAEC)

Read lesson note on Crop Pests (JAMB)

Principles Of Supply

Crop Pests

View Answer

Question 30 Report

Which of the following parasites may be found in the gut of livestock?

Tick

Flea

Roundworm Correct answer

Louse

Answer Details

Roundworms, also known as nematodes, can be found in the gut of livestock. These parasites live in the intestines of animals and feed on their nutrient-rich digested food. They can cause a range of health problems for the affected livestock, including reduced growth, weight loss, and diarrhea. To prevent the spread of roundworms, it is important to implement good hygiene and management practices on farms, such as regular deworming and keeping pasture areas clean.

Read lesson note on Livestock Management (WAEC)

Livestock Management

View Answer

Question 31 Report

The diagram above represents the digestive system of a?

buck

cock Correct answer

bull

sow

Answer Details

Read lesson note on Animal Reproduction (WAEC)

Animal Reproduction

View Answer

Question 32 Report

The wallow should be provided in the pen of pigs in order to?

reduce the feed intakes of pigs

increase the water intakes of pigs

enable the pigs to swim

cool the temperature of pigs Correct answer

Answer Details

A wallow is a muddy area or pool of water that is provided in pig pens. The main purpose of a wallow is to cool down the body temperature of pigs. Pigs do not have sweat glands, so they cannot regulate their body temperature through sweating like humans. They cool themselves by rolling in mud or water, which helps to dissipate heat from their bodies. Therefore, the correct option is that a wallow is provided in the pen of pigs to cool the temperature of pigs. It does not reduce feed intake or increase water intake, nor does it enable pigs to swim.

Read lesson note on Types And Classification Of Farm Animals (WAEC)

Read lesson note on Animal Reproduction (WAEC)

Types And Classification Of Farm Animals

Animal Reproduction

View Answer

Question 33 Report

Determine the equilibrium price of rice.

N1.00

N2.00 Correct answer

N3.00

N4.00

Answer Details

Determining the equilibrium price of rice depends on the market demand and supply of rice. The equilibrium price is the price at which the quantity of rice demanded by buyers is equal to the quantity of rice supplied by sellers. If the demand for rice is high and the supply is low, the price of rice will increase until buyers are willing to buy less rice or sellers are willing to supply more rice. Conversely, if the supply of rice is high and the demand is low, the price of rice will decrease until buyers are willing to buy more rice or sellers are willing to supply less rice. Without knowing the current market demand and supply of rice, it's impossible to determine the equilibrium price of rice. Therefore, none of the options provided (N1.00, N2.00, N3.00, or N4.00) can be the correct answer. The equilibrium price of rice can only be determined by analyzing the current market conditions of demand and supply.

Read lesson note on Basic Economic Principles (JAMB)

Basic Economic Principles

View Answer

Question 34 Report

The practice of measuring and mapping out the size, position and boundary of a farmland is called farm?

layout

business

surveying Correct answer

tillage

Answer Details

The practice of measuring and mapping out the size, position and boundary of a farmland is called surveying. This involves using tools and techniques to accurately determine the boundaries of the land, its size and its location on a larger map. Surveying is an important aspect of farming as it helps farmers to know exactly where their land begins and ends, which can be useful in preventing disputes with neighboring farms or in accurately applying fertilizers and other inputs to the crops.

Read lesson note on Farm Surveying And Farmstead Planning (JAMB)

Read lesson note on Simple Farm Tools (JAMB)

Farm Surveying And Farmstead Planning

Simple Farm Tools

View Answer

Question 35 Report

What is the change in quantity of rice demand when the price increases from N1.00 to N5.00?

8kg

6kg Correct answer

4kg

2kg

Answer Details

View Answer

Question 36 Report

Which of the following statements is not a reason for budding? The resulting plants_______

can withstand adverse climatic conditions Correct answer

flower and fruit early

are more disease resistant

develop broader leave for photosynthesis

Answer Details

Read lesson note on Maintenance Practices And Precautionary Measures (WAEC)

Read lesson note on Genetics (JAMB)

Maintenance Practices And Precautionary Measures

Genetics

View Answer

Question 37 Report

Calculate in hectares the area of a rectangular farmland with dimensions 50m by 25m?

125ha

12.5ha

1.25ha

0.125ha Correct answer

Answer Details

The area of a rectangular farmland can be calculated by multiplying its length by its width. In this case, the length of the farmland is 50 meters and the width is 25 meters, so the area is 50m x 25m = 1250 square meters. However, the answer is not in square meters but in hectares, which is a unit of area commonly used to measure land. One hectare is equal to 10,000 square meters. To convert the area from square meters to hectares, we divide the area by 10,000: 1250 square meters / 10,000 = 0.125 hectares. So, the answer is 0.125 hectares, or 0.125ha.

Read lesson note on Land Preparation And Soil Tillage (JAMB)

Land Preparation And Soil Tillage

View Answer

Question 38 Report

Bone meal is usually included in the diet of livestock to supply?

calcium and phosphorus Correct answer

calcium and iodine

phosphorus and iron

magnesium and sodium

Answer Details

Bone meal is included in the diet of livestock to supply calcium and phosphorus. Bone meal is made from crushed animal bones that have been finely ground into a powder. This powder is a rich source of calcium and phosphorus, which are both essential minerals for the growth and development of livestock. Calcium is important for strong bones and teeth, while phosphorus is needed for energy metabolism, cell growth, and maintenance of pH balance in the body. By providing these essential nutrients in the diet, bone meal helps to ensure that livestock remain healthy and develop properly.

Read lesson note on Reproduction In Farm Animals (JAMB)

Reproduction In Farm Animals

View Answer

Question 39 Report

A fresh garden soil sample weighed 25kg. When oven-dried, its weight reduced to 20kg. Calculate the percentage moisture content of the soil sample.

5.0%

12.5%

20.0% Correct answer

25.0%

Answer Details

To calculate the percentage moisture content of the soil sample, we need to first find out the weight of the water that was present in the original sample. The weight of water in the original sample can be found by subtracting the weight of the dried sample from the weight of the original sample: Weight of water = Weight of original sample - Weight of dried sample = 25 kg - 20 kg = 5 kg Now, we can use the following formula to calculate the percentage moisture content: Percentage moisture content = (Weight of water / Weight of original sample) x 100% Substituting the values we obtained, we get: Percentage moisture content = (5 kg / 25 kg) x 100% = 20% Therefore, the percentage moisture content of the soil sample is 20%.

Read lesson note on Growth, Development And Reproduction (JAMB)

Growth, Development And Reproduction

View Answer

Question 40 Report

A planting material used in propagating plaintain is the?

crown Correct answer

peeper

slip

leaf

Answer Details

Read lesson note on Genetics (JAMB)

Read lesson note on Plant Propagation Methods (JAMB)

Genetics

Plant Propagation Methods

View Answer

Question 41 Report

In a crop rotation system, it is usually preferred that cassava comes last in the rotation because it?

adds nitrogen to the soil

is a shallow feeder Correct answer

is a deep rooted crop

is a perennial crop

Answer Details

Read lesson note on Soil Water And Soil Conservation (JAMB)

Read lesson note on Cropping Systems, Planting Patterns And Plant Density (JAMB)

Soil Water And Soil Conservation

Cropping Systems, Planting Patterns And Plant Density

View Answer

Question 42 Report

In green manuring, crops are ploughed into the soil just before flowering in order to?

control soil pathogens

enrich the soil with nutrients Correct answer

control soil erosion

increase the soil temperature

Answer Details

Read lesson note on Meaning And Scope Of Agriculture (JAMB)

Read lesson note on Land Preparation And Soil Tillage (JAMB)

Meaning And Scope Of Agriculture

Land Preparation And Soil Tillage

View Answer

Question 43 Report

Which of the following statement about inbreeding in farm animal is/are false? I.Inbred animals reach market weight early II.Inbred animals have reduced vigour III.Inbreeding increases the occurrences of undesirable traits

I Only Correct answer

II Only

I and II Only

I and III Only

Answer Details

Read lesson note on Genetics (JAMB)

Read lesson note on Growth, Development And Reproduction (JAMB)

Genetics

Growth, Development And Reproduction

View Answer

Question 44 Report

The data for feed consumption and weight gain of our four farm animals labelled P,Q,R and S are shown below.

Use the data to answer this question correctly

P: 50kg feed consumed and 20kg weight gained.

Q: 90kg feed consumed and 30kg weight gained.

R: 100kg feed consumed and 25kg weight gained.

S: 150kg feed consumed and 30kg weight gained.

Which of the animals is the most efficient feed converter?

P Correct answer

Answer Details

Animal P is the most efficient feed converter among the four animals. This is because it gained 20kg of weight by consuming only 50kg of feed. In contrast, animal Q consumed 90kg of feed to gain 30kg of weight, animal R consumed 100kg of feed to gain 25kg of weight, and animal S consumed 150kg of feed to gain 30kg of weight. Therefore, animal P requires the least amount of feed to gain weight, making it the most efficient feed converter among the four animals.

Read lesson note on Main Pests And Parasites Of Farm Animals (WAEC)

Read lesson note on Animal Feeds And Feed Stuffs And Their Local Sources (WAEC)

Main Pests And Parasites Of Farm Animals

Animal Feeds And Feed Stuffs And Their Local Sources

View Answer

Question 45 Report

Which of the following factors of agricultural production is abundant in rural areas?

Enterprise

Land

Labour Correct answer

Capital

Answer Details

Read lesson note on Factors Of Production (WAEC)

Factors Of Production

View Answer

Question 46 Report

Protective functions of forests include the following except

soil conservation

serving as windbreak

purification of air

source of firewood Correct answer

Answer Details

The protective function of forests that is not included in the list is serving as a source of firewood. Forests play a crucial role in protecting the environment by conserving soil, acting as a windbreak, and purifying the air. However, they are not specifically designed to serve as a source of firewood. Instead, they provide a habitat for wildlife, regulate the water cycle, and help mitigate climate change by absorbing carbon dioxide from the atmosphere.

Read lesson note on Forest Management (Silviculture) (JAMB)

Forest Management (Silviculture)

View Answer

Question 47 Report

The vector of leaf curl disease of cotton is?

grasshopper

termites

thrips

white fly Correct answer

Answer Details

The vector of leaf curl disease of cotton is the whitefly. A vector is a type of insect that can spread a disease from one plant to another. In the case of leaf curl disease in cotton, the whitefly is the insect that spreads the virus that causes the disease. The whitefly feeds on the sap of the cotton plant, and in doing so, it can spread the virus from an infected plant to a healthy plant. This can lead to the spread of the disease and can cause significant damage to cotton crops.

Read lesson note on Crop Diseases (JAMB)

Crop Diseases

View Answer

Question 48 Report

Study the graph illustrated above and answer this question correctly

The graph best_____________

shows an increase in the supply of rice

describes a shift in the demand for rice

describes the equilibrium price for rice Correct answer

shows that the demand for rice exceeds supply

Answer Details

Read lesson note on Principles Of Supply (WAEC)

Read lesson note on Basic Economic Principles (JAMB)

Principles Of Supply

Basic Economic Principles

View Answer

Question 49 Report

Which of the following implements is used for primary tillage?

ridger

cultivator

plough Correct answer

harrow

Answer Details

The implement used for primary tillage is a plough. Primary tillage is the first stage of soil cultivation where the soil is broken up and turned over to a significant depth to prepare it for planting. A plough is a farming tool with one or more blades that are used to cut, lift and turn over the soil in preparation for planting. The plough blade is designed to penetrate the soil and cut a furrow, which is then turned over to expose the nutrient-rich soil below the surface. This process helps to loosen and aerate the soil, which makes it easier for plants to take root and grow. On the other hand, cultivators, harrows, and ridgers are all secondary tillage tools that are used after primary tillage to further prepare the soil for planting. Cultivators are used to remove weeds and break up the soil surface to improve water penetration, while harrows are used to level the soil and break up clumps of soil. Ridgers are used to create ridges or furrows in the soil to plant crops. In conclusion, a plough is used for primary tillage, which is the first stage of soil cultivation where the soil is broken up and turned over to prepare it for planting. Other tools like cultivators, harrows, and ridgers are used for secondary tillage to further prepare the soil for planting.

Read lesson note on Land Preparation And Soil Tillage (JAMB)

Land Preparation And Soil Tillage

View Answer

Question 50 Report

Which of the following breeds of cattle is exotic?

Sokoto gudali

ndama

friesian Correct answer

muturu

Answer Details

The breed of cattle that is considered "exotic" is the friesian. This breed is considered exotic because it originally comes from the Netherlands and is not commonly found in many countries. It is known for its high milk production and black and white coloring. The other breeds, Sokoto gudali, Ndama, and Muturu are breeds that are native to African countries and are more commonly found in those regions.

Read lesson note on Common Breeds Of Animals And Types Of Animals In West Africa (WAEC)

Common Breeds Of Animals And Types Of Animals In West Africa

View Answer






Press & Hold to Drag Around
Click Here to Close

WAEC SSCE - Agricultural Science - 2019 (Objective)