Q1551.
The "soil erosion" rate is best expressed in which unit of measurement?
A
Kilograms per hectare per year
B
Meters per second
C
Square meters per year
D
Tons per square meter per month
A
Q1552.
Which of the following is a major component of a balanced animal feed formulated for lactating dairy cows?
A
High carbohydrate, low protein
B
High protein, low fat
C
High energy, moderate protein, adequate minerals
D
Low energy, high fiber
C
Q1553.
What is the primary function of the "root zone" in plant physiology?
A
Photosynthesis
B
Water and nutrient uptake
C
Storage of starch
D
Production of flowers
B
Q1554.
Which of the following irrigation methods is most water‑efficient for drip irrigation systems?
A
Subsurface drip irrigation
B
Flood irrigation
C
Furrow irrigation
D
Sprinkler irrigation
A
Q1555.
In the context of crop breeding, what does "heterosis" refer to?
A
The genetic diversity within a species
B
The increased vigor of hybrid offspring compared to parents
C
The mutation rate of a crop genome
D
The loss of yield due to disease
B
Q1556.
Which of the following is a direct indicator of soil organic matter content?
A
Soil pH
B
Electrical conductivity
C
Soil color (dark brown to black)
D
Soil texture (clay, silt, sand)
C
Q1557.
In the production of bioethanol from maize, which component is primarily fermented to produce ethanol?
A
Cellulose
B
Lignin
C
Starch
D
Hemicellulose
C
Q1558.
Which of the following is a key advantage of using cover crops in conservation tillage?
A
Increased soil compaction
B
Reduction of soil organic matter
C
Prevention of soil erosion and nutrient leaching
D
Higher immediate crop yield
C
Q1559.
The "law of the minimum" in plant nutrition states that:
A
Plants need equal amounts of all nutrients
B
The most limiting nutrient determines plant growth rate
C
Nutrient uptake is independent of soil pH
D
Excess nutrients always promote growth
B
Q1560.
Which of the following is a primary greenhouse gas emitted from livestock production?
A
Nitrous oxide (N₂O)
B
Methane (CH₄)
C
Carbon dioxide (CO₂)
D
Sulphur dioxide (SO₂)
B
Q1561.
In a greenhouse, the optimal temperature range for tomato growth is approximately:
A
15–20 °C
B
20–25 °C
C
25–30 °C
D
30–35 °C
C
Q1562.
Which of the following best describes the role of mycorrhizal fungi in plant nutrition?
A
They fix atmospheric nitrogen for plants
B
They decompose organic matter into humus
C
They form symbiotic associations that enhance phosphorus uptake
D
They produce plant hormones that inhibit growth
C
Q1563.
The "pesticide residue" on a harvested crop is most likely to be removed by:
A
Washing with cold water only
B
Peeling the crop surface
C
Cooking at high temperatures
D
Both B and C
D
Q1564.
In soil classification, which of the following horizons is characterized by a high accumulation of organic matter and is typically dark brown or black?
A
O horizon
B
A horizon
C
E horizon
D
C horizon
A
Q1565.
Which of the following is NOT a characteristic of a "no‑till" farming system?
A
Reduced soil erosion
B
Increased soil organic carbon
C
High levels of soil compaction
D
Lower fuel consumption
C
Q1566.
In the context of aquaculture, which of the following feeds is considered the most sustainable protein source?
A
Fish meal made from wild fish
B
Soybean meal
C
Insect protein (e.g., black soldier fly larvae)
D
Animal blood meal
C
Q1567.
The "soil water capacity" is most closely related to:
A
Soil pH
B
Soil texture and structure
C
Soil organic matter content only
D
Soil depth only
B
Q1568.
Which of the following is an example of a "biological control agent" used in pest management?
A
Glyphosate herbicide
B
Bacillus thuringiensis (Bt) toxin
C
Copper sulfate
D
Pesticidal soap
B
Q1569.
In a typical "rainfed" cropping system, what is the most critical factor affecting crop yield?
A
Availability of irrigation water
B
Soil fertility and nutrient management
C
Pest and disease pressure
D
Climate and rainfall variability
D
Q1570.
Which of the following best explains the term "soil fertility"?
A
The ability of soil to support plant growth through adequate nutrients, structure, and water relations
B
The amount of sand in the soil
C
The pH level of the soil
D
The color of the soil
A
Q1571.
In a greenhouse, the "CO₂ enrichment" technique is used to:
A
Reduce plant transpiration
B
Increase photosynthetic rate and yield
C
Lower the ambient temperature
D
Promote root growth only
B
Q1572.
Which of the following is a major benefit of crop rotation in farming?
A
Increases soil erosion
B
Reduces pest build‑up
C
Decreases soil fertility
D
Lowers crop yield
B
Q1573.
What is the main purpose of using a seed drill in agriculture?
A
To spray pesticides
B
To plant seeds at uniform depth and spacing
C
To harvest crops
D
To irrigate fields
B
Q1574.
Which of the following is a natural fertilizer?
A
Chemical fertilizer
B
Animal manure
C
Synthetic nitrogen
D
Pesticide
B
Q1575.
The process by which plants lose water through their leaves is called:
A
Photosynthesis
B
Respiration
C
Transpiration
D
Germination
C
Q1576.
Which of these is a major component of soil that supports plant growth?
A
Air
B
Water
C
Organic matter
D
All of the above
D
Q1577.
Which of the following best describes a greenhouse?
A
A place where animals are kept
B
A structure that protects crops from weather
C
A type of seed
D
A machine for harvesting
B
Q1578.
What is the primary function of a plough in agriculture?
A
To plant seeds
B
To till the soil
C
To harvest crops
D
To irrigate fields
B
Q1579.
Which of the following is an example of a legume crop?
A
Maize
B
Rice
C
Soybean
D
Wheat
C
Q1580.
The term “sustainable agriculture” refers to:
A
Using only chemical fertilizers
B
Farming practices that meet current needs without harming future resources
C
Planting crops only once
D
Ignoring soil health
B
Q1581.
What is the main role of irrigation in farming?
A
To reduce soil fertility
B
To supply water to crops
C
To increase pest populations
D
To lower crop yield
B
Q1582.
Which of the following is a common pest that attacks wheat?
A
Aphids
B
Butterflies
C
Bees
D
Ants
A
Q1583.
What is the main benefit of using mulch around garden plants?
A
It attracts pests
B
It keeps soil moist and reduces weeds
C
It dries out the soil
D
It increases soil temperature
B
Q1584.
Which of the following is an example of a non‑renewable agricultural input?
A
Compost
B
Synthetic fertilizer
C
Rainwater
D
Sunlight
B
Q1585.
Which of the following tools is used to measure soil moisture?
A
Thermometer
B
Hygrometer
C
Moisture meter
D
Barometer
C
Q1586.
What is the main function of a farm tractor?
A
To plant seeds
B
To harvest crops
C
To pull heavy implements
D
To water plants
C
Q1587.
Which of these is a major crop grown for animal feed in many countries?
A
Cotton
B
Maize
C
Potatoes
D
Coffee
B
Q1588.
The process by which plants convert sunlight into food is called:
A
Respiration
B
Photosynthesis
C
Germination
D
Transpiration
B
Q1589.
Which of the following is NOT a type of soil erosion?
A
Sheet erosion
B
Rill erosion
C
Wind erosion
D
Solar erosion
D
Q1590.
Which of the following is a benefit of using compost in gardens?
A
It removes nutrients from the soil
B
It increases soil acidity
C
It improves soil structure
D
It attracts pests
C
Q1591.
What is the main purpose of a seedbed in planting?
A
To store seeds
B
To provide a suitable environment for seed germination
C
To harvest crops
D
To irrigate fields
B
Q1592.
Which of the following is an example of a greenhouse gas produced by agriculture?
A
Oxygen
B
Nitrous oxide
C
Hydrogen
D
Argon
B
Q1593.
The practice of using fewer chemical inputs and more natural methods is known as:
A
Conventional farming
B
Organic farming
C
Hydroponics
D
Monoculture
B
Q1594.
Which of the following is a major nutrient required by plants?
A
Sodium
B
Chlorine
C
Nitrogen
D
Fluorine
C
Q1595.
Which of the following best describes a “crop”?
A
A type of animal
B
A plant grown for food or fiber
C
A type of fertilizer
D
A farming machine
B
Q1596.
Which of the following is a common method of pest control in farms?
A
Overwatering
B
Crop rotation
C
Ignoring pests
D
Removing all weeds
B
Q1597.
What does the term “yield” refer to in agriculture?
A
The amount of water used
B
The number of pests in a field
C
The quantity of produce harvested
D
The price of seeds
C
Q1598.
Which of the following is a characteristic of a good irrigation system?
A
It over-floods the field
B
It delivers water uniformly
C
It uses only manual labor
D
It ignores soil type
B
Q1599.
Which of the following is a typical tool used for measuring plant height?
A
Ruler
B
Thermometer
C
Scale
D
Compass
A
Q1600.
Which of the following is a primary crop grown in many parts of Nigeria?
A
Corn
B
Wheat
C
Rice
D
Barley
A