Jss3 Third term Agricultural Science past questions and answers

Question: What is the primary purpose of crop rotation in agriculture?

a) Enhancing soil fertility

b) Controlling weeds

c) Preventing soil erosion

d) Improving water retention

 

Answer: a) Enhancing soil fertility

 

Question: Which farming method involves the cultivation of crops without the use of synthetic fertilizers or pesticides?

 

a) Conventional farming

b) Organic farming

c) Hydroponics

d) Aeroponics

 

Answer: b) Organic farming

 

Question: What is the process of converting sunlight into chemical energy in plants?

 

a) Respiration

b) Transpiration

c) Photosynthesis

d) Germination

 

Answer: c) Photosynthesis

 

Question: Which of the following is a root crop?

 

a) Tomato

b) Carrot

c) Spinach

d) Broccoli

 

Answer: b) Carrot

 

Question: What is the purpose of the plough in agriculture?

 

a) Seed planting

b) Soil cultivation

c) Weed control

d) Watering crops

 

Answer: b) Soil cultivation

 

Question: In animal husbandry, what is the term for the process of providing controlled conditions for reproduction?

 

a) Grazing

b) Farrowing

c) Incubation

d) Breeding

 

Answer: d) Breeding

 

Question: Which plant nutrient is essential for the formation of chlorophyll?

 

a) Nitrogen

b) Phosphorus

c) Potassium

d) Magnesium

 

Answer: d) Magnesium

 

Question: What is the term for the practice of growing crops without soil, using nutrient-rich water?

 

a) Hydroponics

b) Aeroponics

c) Aquaponics

d) Vermiculture

 

Answer: a) Hydroponics

 

Question: Which of the following is an example of a cash crop?

 

a) Wheat

b) Millet

c) Sugarcane

d) Sorghum

 

Answer: c) Sugarcane

 

Question: What is the purpose of the silo in agriculture?

 

a) Livestock housing

b) Grain storage

c) Crop drying

d) Fertilizer application

 

Answer: b) Grain storage

 

Question: In aquaculture, what does the term “aeration” refer to?

 

a) Harvesting fish

b) Feeding fish

c) Adding oxygen to water

d) Controlling water temperature

 

Answer: c) Adding oxygen to water

 

Question: Which of the following is a method of weed control that involves covering the soil with a layer of material?

 

a) Mulching

b) Tilling

c) Fallowing

d) Irrigating

 

Answer: a) Mulching

 

Question: What is the purpose of adding lime to acidic soils?

 

a) Improve drainage

b) Enhance fertility

c) Increase acidity

d) Control pests

 

Answer: b) Enhance fertility

 

Question: Which term describes the practice of raising livestock for milk production?

 

a) Pisciculture

b) Apiculture

c) Sericulture

d) Dairying

 

Answer: d) Dairying

 

Question: What is the primary function of the sepal in a flower?

 

a) Attracting pollinators

b) Protecting the flower bud

c) Producing nectar

d) Facilitating fertilization

 

Answer: b) Protecting the flower bud

 

Question: Which soil horizon is rich in organic matter?

 

a) Topsoil

b) Subsoil

c) Bedrock

d) Horizon C

 

Answer: a) Topsoil

 

Question: What is the purpose of cover cropping in agriculture?

 

a) Weed control

b) Pest prevention

c) Soil erosion prevention

d) Nitrogen fixation

 

Answer: c) Soil erosion prevention

 

Question: Which farming method involves cultivating crops in water without soil?

 

a) Hydroponics

b) Aquaponics

c) Paddy cultivation

d) Aeroponics

 

Answer: c) Paddy cultivation

 

Question: What is the term for the process of removing excess water from the soil to improve aeration?

 

a) Mulching

b) Fallowing

c) Irrigation

d) Drainage

 

Answer: d) Drainage

 

Question: In beekeeping, what is the substance that bees collect from flowers to make honey?

 

a) Nectar

b) Pollen

c) Wax

d) Propolis

 

Answer: a) Nectar