Agricultural Biology — MCQs

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1. The branch of biology that deals with crop production and soil management is called:





2. The practice of growing two or more crops together is called:





3. The process of growing crops in alternate seasons to maintain soil fertility is:





4. The most abundant element required for plant growth is:





5. The biofertilizer used for nitrogen fixation in leguminous crops is:





6. Green Revolution in agriculture is associated with:





7. The deficiency of nitrogen in plants causes:





8. The process of water movement through plants and its evaporation from leaves is called:





9. Which plant hormone promotes seed germination?





10. The soil best suited for paddy cultivation is:





11. Which mineral deficiency causes chlorosis in plants?





12. The practice of controlling pests using their natural enemies is called:





13. Bt-cotton is resistant to:





14. Vermicomposting is carried out by:





15. Which element is essential for protein formation in plants?





16. The first step in photosynthesis is:





17. The water-conserving method where water is supplied drop by drop near roots is:





18. Which is a micronutrient for plants?





19. The first product of photosynthesis is:





20. The soil layer rich in organic matter is:





21. The crop that enriches soil with nitrogen is:





22. The process of soaking seeds before sowing is called:





23. Photosynthesis takes place in which cell organelle?





24. The agricultural practice of growing fruits, vegetables, and flowers is called:





25. The term “biofortification” refers to:





26. Excess use of fertilizers causes:





27. Which gas is fixed during photosynthesis?





28. The pH range most suitable for crop growth is:





29. The process of nitrogen fixation in soil is mostly carried out by:





30. Which plant is used as green manure?





31. Which crop is most affected by blast disease?





32. Hybrid vigor in crops is known as:





33. Which is a kharif crop?





34. Which is a rabi crop?





35. The study of soil is called:





36. Which bacteria are used in the production of curd?





37. The deficiency of phosphorus in plants affects:





38. The method of growing plants without soil using nutrient solution is:





39. Which agricultural practice conserves soil?





40. In photosynthesis, oxygen is released from:





41. Which vitamin is increased in golden rice?





42. The first step of soil formation is:





43. The bacteria converting ammonia into nitrites are:





44. The major carbohydrate stored in plants is:





45. The process of removing weeds from crops is called:





46. The gas released during fermentation is:





47. The deficiency of potassium in plants causes:





48. Which is called the food factory of a plant?





49. Which macronutrient is essential for ATP formation in plants?





50. Which practice involves growing crops without synthetic fertilizers and pesticides?





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