Agriculture and food chains - One Line Questions

1. When energy flows from one trophic level to the next in a food chain, approximately how much energy is typically lost? — 90%
2. What is a 'trophic level' in ecology? — A position an organism occupies in a food chain
3. What is 'green manure' in agriculture? — Crops grown specifically to be plowed back into the soil
4. Which organism acts as a primary consumer in an aquatic food chain like a pond ecosystem? — Zooplankton
5. Which of the following are typically decomposers? — Bacteria and fungi
6. In a food chain, energy is transferred from one trophic level to the next. What is the typical efficiency of this energy transfer? — Approximately 10%
7. Which of the following is a fruit commonly grown in Tamil Nadu and used in various dishes? — Mango
8. What are the primary building blocks of proteins, essential for growth and repair in animals? — Amino acids
9. Which nutrient is essential for plant growth and is often added to soil in the form of fertilizers? — Nitrogen
10. Which food is a primary source of protein for vegetarians? — Pulses (like lentils and beans)
11. What term describes organisms that can produce their own food using light energy? — Producers
12. Which of these is a common method for controlling soil erosion in hilly areas? — Contour farming
13. Which of the following is an example of a tertiary consumer? — Eagle (eating a rabbit)
14. What is the process of supplying water to crops artificially? — Irrigation
15. What is the term for the variety of life in a particular habitat or ecosystem, which is crucial for stable food webs? — Biodiversity
16. What is the process called when plants absorb water from the soil through their roots? — Absorption
17. What is the term for the process where water vapor in the atmosphere cools and changes back into liquid water, forming clouds? — Condensation
18. Which agricultural practice aims to conserve water by reducing evaporation from the soil surface? — Mulching
19. What is the term for a network of interconnected food chains in an ecosystem? — Food web
20. What is the main source of energy for almost all ecosystems on Earth? — The Sun
21. Which of the following is a key component of a balanced diet that provides essential vitamins and minerals? — Fruits and vegetables
22. In the food chain: Grass → Grasshopper → Frog → Snake, which organism is the secondary consumer? — Frog
23. Which agricultural product is a major source of edible oil in India, often grown as a Rabi crop? — Mustard
24. What is the term for the practice of raising livestock such as cattle, sheep, and goats for meat, milk, or wool? — Animal husbandry
25. Which of the following is a negative impact of using excessive chemical fertilizers? — Water pollution (eutrophication)
26. Pesticides are chemicals used in agriculture to: — Control pests and diseases
27. Which of the following is a consequence of deforestation impacting food chains? — Loss of habitat for herbivores and carnivores
28. Which type of agriculture focuses on minimizing environmental impact and promoting biodiversity? — Organic farming
29. Which of the following is a major staple food crop in many parts of the world, providing carbohydrates? — Rice
30. Which of the following is a producer in a typical terrestrial food chain? — Grass
31. Which government scheme in India aims to improve agricultural productivity and farmer income through various initiatives? — Pradhan Mantri Kisan Samman Nidhi (PM-KISAN)
32. What agricultural practice involves growing different crops in succession on the same land to improve soil health and reduce pests? — Crop rotation
33. What is the term for the practice of growing crops and raising animals together on the same farm? — Mixed farming
34. An omnivore is an organism that eats: — Both plants and animals
35. A herbivore is an animal that primarily eats: — Plants
36. Which environmental factor is crucial for photosynthesis to occur in plants? — Carbon dioxide
37. Which natural process helps to cycle nutrients like nitrogen and phosphorus through the ecosystem, making them available for producers? — Decomposition
38. What is the process by which plants release water vapor into the atmosphere through their leaves? — Transpiration
39. A carnivore is an organism that obtains energy by eating: — Other animals
40. In the context of food, what does 'fortification' mean? — Adding nutrients to food that are not naturally present
41. What is the role of decomposers in an ecosystem? — Break down dead organic matter
42. In the food chain: Phytoplankton → Zooplankton → Small Fish → Shark, what is the role of Small Fish? — Secondary Consumer
43. What is the primary process by which plants produce their own food? — Photosynthesis
44. What is the term for the cultivation of fish in controlled environments? — Aquaculture
45. What is 'crop yield' in agriculture? — The amount of produce harvested per unit area
46. What is the role of earthworms in agricultural soil? — They aerate the soil and improve its structure.
47. What is the primary goal of food preservation techniques like drying, salting, and canning? — To prevent spoilage and extend shelf life
48. What is the primary role of roots in a plant? — To absorb water and nutrients from the soil
49. What is the main function of carbohydrates in an organism's diet? — To provide energy
50. What is the primary function of seeds in agriculture? — To store energy for the plant's early growth
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