JSS3 First Term Agricultural Science Past Questions And Answers
What is the primary function of the root system in plants?
a) Photosynthesis
b) Absorption of water and nutrients
c) Storage of food
d) Reproduction
Answer: b) Absorption of water and nutrients
Which agricultural practice involves the cultivation of crops and raising of animals in the same farming system?
a) Monoculture
b) Mixed farming
c) Hydroponics
d) Sericulture
Answer: b) Mixed farming
What is the purpose of plowing in agriculture?
a) Weed control
b) Seed germination
c) Soil aeration and preparation
d) Pest management
Answer: c) Soil aeration and preparation
Which of the following is a major nutrient required by plants for healthy growth?
a) Nitrogen
b) Iron
c) Calcium
d) Zinc
Answer: a) Nitrogen
What is the role of bees in agriculture?
a) Soil aeration
b) Pollination of flowers
c) Pest control
d) Water absorption
Answer: b) Pollination of flowers
Which farming practice involves the cultivation of crops on a slope with leveled areas?
a) Contour plowing
b) Strip cropping
c) Crop rotation
d) Terrace farming
Answer: d) Terrace farming
What is the function of the chlorophyll in plants?
a) Water absorption
b) Photosynthesis
c) Root development
d) Fruit ripening
Answer: b) Photosynthesis
Which of the following is a by-product of photosynthesis?
a) Oxygen
b) Carbon dioxide
c) Nitrogen
d) Hydrogen
Answer: a) Oxygen
What is the main purpose of crop rotation in agriculture?
a) Soil fertility improvement
b) Pest control
c) Weed suppression
d) Water conservation
Answer: a) Soil fertility improvement
Which farming method involves the use of chemicals for pest and disease control?
a) Organic farming
b) Sustainable farming
c) Conventional farming
d) Aquaponics
Answer: c) Conventional farming
What is the function of the ovary in a flower?
a) Photosynthesis
b) Seed production
c) Pollination
d) Water absorption
Answer: b) Seed production
Which of the following is a warm-season crop?
a) Wheat
b) Rice
c) Maize
d) Barley
Answer: c) Maize
What is the primary purpose of adding fertilizer to the soil?
a) Weed control
b) Pest management
c) Soil fertility enhancement
d) Water conservation
Answer: c) Soil fertility enhancement
Which agricultural practice involves growing two or more crops simultaneously in the same field?
a) Monoculture
b) Polyculture
c) Crop rotation
d) Sericulture
Answer: b) Polyculture
What is the significance of farm implements in agriculture?
a) Pest control
b) Efficient farm operations
c) Soil aeration
d) Seed germination
Answer: b) Efficient farm operations
What is the primary function of nitrogen-fixing bacteria in the soil?
a) Water absorption
b) Pest control
c) Nitrogen fixation
d) Weed suppression
Answer: c) Nitrogen fixation
Which of the following is a greenhouse gas released during the decomposition of organic matter in the soil?
a) Oxygen
b) Carbon dioxide
c) Nitrogen
d) Methane
Answer: b) Carbon dioxide
What is the purpose of pruning in fruit cultivation?
a) Soil aeration
b) Seed production
c) Weed control
d) Shaping and controlling plant growth
Answer: d) Shaping and controlling plant growth
Which type of farming involves the cultivation of crops without using synthetic chemicals or pesticides?
a) Conventional farming
b) Organic farming
c) Hydroponics
d) Aquaculture
Answer: b) Organic farming
What is the primary function of the stomata in plant leaves?
a) Water absorption
b) Photosynthesis
c) Transpiration
d) Root development
Answer: c) Transpiration.