Agriculture MCQs with Answers for Competitive Exams – Part 1

1. What is the primary function of chlorophyll in plants?

A) Water absorption B) Photosynthesis C) Nutrient storage D) Respiration

2. Which of the following is a major disease caused by a virus in plants?

A) Rust B) Blight C) Mosaic D) Wilt

3. What is the process of introducing beneficial organisms to control pests called?

A) Chemical control B) Biological control C) Mechanical control D) Cultural control

4. Which nutrient is most crucial for fruit development in plants?

A) Nitrogen B) Phosphorus C) Potassium D) Calcium

5. What is the term for the practice of growing two or more crops in proximity?

A) Monoculture B) Crop rotation C) Intercropping D) Agroforestry

6. Which pathogen is responsible for causing powdery mildew in plants?

A) Bacteria B) Fungi C) Virus D) Nematodes

7. What is the primary purpose of soil pH testing?

A) Determine soil type B) Measure nutrient levels C) Assess soil structure D) Evaluate acidity and alkalinity

8. Which of the following is a sign of nitrogen deficiency in plants?

A) Yellowing of older leaves B) Wilting of leaves C) Dark green leaves D) Stunted growth

9. What type of plant is grown primarily for food, fiber, or fuel?

A) Ornamental plant B) Cover crop C) Cash crop D) Fallow crop

10. Which method of irrigation delivers water directly to the root zone of plants?

A) Surface irrigation B) Drip irrigation C) Flood irrigation D) Sprinkler irrigation

11. What is the main vector for the spread of plant viruses?

A) Soil B) Wind C) Insects D) Water

12. Which of the following is a common symptom of root rot?

A) Leaf curl B) Yellowing leaves C) Wilting and stunted growth D) Dark spots on leaves

13. What type of crop is typically planted to prevent soil erosion?

A) Cash crop B) Cover crop C) Perennial crop D) Annual crop

14. Which of the following best describes monoculture?

A) Growing multiple crops in a field B) Growing a single crop over a large area C) Rotating crops annually D) Using different planting techniques

15. Which nutrient is essential for chlorophyll synthesis?

A) Magnesium B) Iron C) Manganese D) Zinc

16. What is the primary purpose of crop rotation?

A) Increase soil fertility B) Reduce pest and disease incidence C) Enhance biodiversity D) All of the above

17. Which of the following diseases is caused by a fungus?

A) Black sigatoka B) Citrus canker C) Tobacco mosaic virus D) Bacterial wilt

18. What is an indicator of overwatering in plants?

A) Leaf wilting B) Leaf drop C) Root rot D) Leaf curling

19. Which soil type has the best drainage properties?

A) Clay B) Silt C) Sand D) Loam

20. Which type of pest is typically managed through cultural practices?

A) Insect pests B) Rodents C) Weeds D) All of the above

21. What is the primary role of mycorrhizae in plant growth?

A) Nitrogen fixation B) Water absorption C) Enhancing nutrient uptake D) Pest control

22. Which of the following is not a method of organic farming?

A) Crop rotation B) Synthetic fertilizers C) Cover cropping D) Composting

23. Which plant hormone is primarily responsible for fruit ripening?

A) Auxin B) Ethylene C) Gibberellin D) Cytokinin

24. What type of pest is a nematode?

A) Insect B) Fungi C) Worm-like organism D) Bacteria

25. What is the main objective of integrated pest management (IPM)?

A) Complete eradication of pests B) Minimizing pesticide use while managing pests C) Focusing solely on chemical control D) Increasing pest populations

Agriculture MCQs with Answers for Competitive Exams – Part 1

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