SS1 Second Term Agricultural Science Past Questions and Answers

Question: Which of the following is a leguminous cover crop commonly used in soil conservation?

A) Rye

B) Alfalfa

C) Sorghum

D) Millet

Answer: B) Alfalfa

Question: What is the primary function of the stomata in plant leaves?

 

A) Photosynthesis

B) Transpiration

C) Root absorption

D) Reproduction

Answer: B) Transpiration

Question: Which nutrient is often referred to as a micronutrient in plant nutrition?

 

A) Nitrogen

B) Phosphorus

C) Iron

D) Potassium

Answer: C) Iron

Question: What is the process of converting atmospheric nitrogen into a form usable by plants?

 

A) Nitrification

B) Denitrification

C) Nitrogen fixation

D) Nitrogen assimilation

Answer: C) Nitrogen fixation

Question: In crop production, what is the purpose of thinning seedlings?

 

A) Increase yield

B) Prevent diseases

C) Control pests

D) Allow proper spacing for growth

Answer: D) Allow proper spacing for growth

Question: Which type of farming involves the cultivation of crops without the use of synthetic pesticides and fertilizers?

 

A) Organic farming

B) Conventional farming

C) Hydroponic farming

D) Aquaponic farming

Answer: A) Organic farming

Question: What is the primary function of the harrow in agriculture?

 

A) Planting seeds

B) Irrigating fields

C) Breaking up soil clumps

D) Harvesting crops

Answer: C) Breaking up soil clumps

Question: Which of the following is a method of water conservation in agriculture?

 

A) Flood irrigation

B) Drip irrigation

C) Furrow irrigation

D) Subsurface irrigation

Answer: B) Drip irrigation

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

 

A) Increase soil acidity

B) Improve soil structure

C) Reduce soil acidity

D) Enhance water retention

Answer: C) Reduce soil acidity

Question: Which gas is released during the process of anaerobic decomposition of organic matter in flooded rice fields?

 

A) Oxygen

B) Carbon dioxide

C) Methane

D) Nitrous oxide

Answer: C) Methane

Question: What is the main function of the plasmodesmata in plant cells?

 

A) Cellular respiration

B) Photosynthesis

C) Cell communication

D) Water absorption

Answer: C) Cell communication

Question: Which of the following is a cool-season grass commonly used for forage in livestock production?

 

A) Bermuda grass

B) Timothy grass

C) St. Augustine grass

D) Bahia grass

Answer: B) Timothy grass

Question: What is the primary role of mycorrhizal fungi in plant roots?

 

A) Nitrogen fixation

B) Water absorption

C) Disease prevention

D) Nutrient absorption

Answer: D) Nutrient absorption

Question: Which process involves the removal of undesirable traits from plants or animals through selective breeding?

 

A) Cloning

B) Hybridization

C) Mutation

D) Genetic modification

Answer: B) Hybridization

Question: What is the primary purpose of adding organic matter to the soil?

 

A) Increase soil acidity

B) Enhance water runoff

C) Improve soil fertility and structure

D) Speed up decomposition

Answer: C) Improve soil fertility and structure

Question: Which of the following is a tuber crop?

 

A) Carrot

B) Potato

C) Onion

D) Cabbage

Answer: B) Potato

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

 

A) Protection

B) Reproduction

C) Photosynthesis

D) Attraction

Answer: D) Attraction

Question: Which agricultural practice involves alternating periods of cultivation and fallowing to restore soil fertility?

 

A) Crop rotation

B) Monoculture

C) Polyculture

D) Agroforestry

Answer: A) Crop rotation

Question: What is the main purpose of a soil pH test in agriculture?

 

A) Measure soil temperature

B) Assess nutrient levels

C) Determine soil texture

D) Evaluate soil acidity or alkalinity

Answer: D) Evaluate soil acidity or alkalinity

Question: Which of the following is a cereal crop commonly used for making flour?

 

A) Cotton

B) Barley

C) Sorghum

D) Millet

Answer: B) Barley