1. Which of the following is a consequence of over-irrigation?
A. Improved crop growth
B. Soil erosion
C. Waterlogging and salinization
D. Increased plant resistance to diseases
Answer: c) Waterlogging and salinization
Rationale: Over-irrigation can lead to waterlogging, where excess
water saturates the soil, and salinization, where salt builds up in the
soil, both harming plant growth.
2. Which of the following practices helps prevent soil erosion?
A. Overgrazing
B. Deforestation
C. Planting cover crops
D. Using chemical fertilizers
Answer: c) Planting cover crops
Rationale: Cover crops protect the soil by reducing erosion, improving
soil structure, and preventing nutrient loss.
3. Which of the following is an example of a root crop?
,A. Wheat
B. Potato
C. Carrot
D. Tomato
Answer: c) Carrot
Rationale: Root crops are those that store nutrients in their roots, like
carrots, potatoes, and turnips.
4. What is the main advantage of hydroponics over traditional farming?
A. Higher water usage
B. No need for sunlight
C. No soil required for plant growth
D. Increased dependence on synthetic pesticides
Answer: c) No soil required for plant growth
Rationale: Hydroponics allows plants to grow in a water-based nutrient
solution without the need for soil, making it ideal for areas with poor or
limited soil.
5. What is the primary function of mycorrhizal fungi in agriculture?
A. Increase water retention in soil
B. Decompose organic material
C. Form symbiotic relationships with plant roots to enhance nutrient
uptake
, D. Protect plants from insect pests
Answer: c) Form symbiotic relationships with plant roots to enhance
nutrient uptake
Rationale: Mycorrhizal fungi form symbiotic relationships with plant
roots, improving nutrient and water uptake, particularly phosphorus.
6. Which of these is a renewable resource in agriculture?
A. Fossil fuels
B. Synthetic fertilizers
C. Solar energy
D. Pesticides
Answer: c) Solar energy
Rationale: Solar energy is a renewable resource that drives processes
like photosynthesis and is used in sustainable farming practices.
7. What is the main advantage of using genetically modified (GM)
crops in agriculture?
A. Reduced water consumption
B. Increased crop yield and pest resistance
C. Improved soil fertility
D. Decreased need for irrigation
Answer: b) Increased crop yield and pest resistance
A. Improved crop growth
B. Soil erosion
C. Waterlogging and salinization
D. Increased plant resistance to diseases
Answer: c) Waterlogging and salinization
Rationale: Over-irrigation can lead to waterlogging, where excess
water saturates the soil, and salinization, where salt builds up in the
soil, both harming plant growth.
2. Which of the following practices helps prevent soil erosion?
A. Overgrazing
B. Deforestation
C. Planting cover crops
D. Using chemical fertilizers
Answer: c) Planting cover crops
Rationale: Cover crops protect the soil by reducing erosion, improving
soil structure, and preventing nutrient loss.
3. Which of the following is an example of a root crop?
,A. Wheat
B. Potato
C. Carrot
D. Tomato
Answer: c) Carrot
Rationale: Root crops are those that store nutrients in their roots, like
carrots, potatoes, and turnips.
4. What is the main advantage of hydroponics over traditional farming?
A. Higher water usage
B. No need for sunlight
C. No soil required for plant growth
D. Increased dependence on synthetic pesticides
Answer: c) No soil required for plant growth
Rationale: Hydroponics allows plants to grow in a water-based nutrient
solution without the need for soil, making it ideal for areas with poor or
limited soil.
5. What is the primary function of mycorrhizal fungi in agriculture?
A. Increase water retention in soil
B. Decompose organic material
C. Form symbiotic relationships with plant roots to enhance nutrient
uptake
, D. Protect plants from insect pests
Answer: c) Form symbiotic relationships with plant roots to enhance
nutrient uptake
Rationale: Mycorrhizal fungi form symbiotic relationships with plant
roots, improving nutrient and water uptake, particularly phosphorus.
6. Which of these is a renewable resource in agriculture?
A. Fossil fuels
B. Synthetic fertilizers
C. Solar energy
D. Pesticides
Answer: c) Solar energy
Rationale: Solar energy is a renewable resource that drives processes
like photosynthesis and is used in sustainable farming practices.
7. What is the main advantage of using genetically modified (GM)
crops in agriculture?
A. Reduced water consumption
B. Increased crop yield and pest resistance
C. Improved soil fertility
D. Decreased need for irrigation
Answer: b) Increased crop yield and pest resistance
