Question Paper
Class / Subject: Class 9 (SSC) · Science and Technology (विज्ञान आणि तंत्रज्ञान)
Chapter: Chapter 7 — Chapter 7: Energy Flow in an Ecosystem
Time Allowed: 32 minutes
Max Marks: 16
1. What captures solar energy in an ecosystem? [1]
(A) Producers (plants)
(B) Only consumers
(C) Only decomposers
(D) Nothing captures it
2. How do producers capture energy? [1]
(A) Through photosynthesis
(B) Through respiration only
(C) Through decomposition
(D) Through predation
3. What are primary consumers? [1]
(A) Herbivores
(B) Carnivores only
(C) Producers
(D) Decomposers
4. What percentage of energy transfers between trophic levels? [1]
(A) About 10%
(B) About 100%
(C) About 50%
(D) About 1%
5. What happens to the rest of the energy? [1]
(A) It's lost as heat
(B) It disappears completely
(C) It transfers fully
(D) It increases
6. What is this called? [1]
(A) The 10% law
(B) The 100% law
(C) The heat law
(D) No specific law
7. What is a food web? [1]
(A) Interconnected food chains
(B) A single food chain
(C) No connection between chains
(D) Only producers connected
8. Why learn about energy flow in ecosystems? [1]
(A) To understand ecological energy transfer
(B) No reason
(C) It's not useful
(D) Only for tests
9. What captures solar energy in an ecosystem? [1]
(A) Producers (plants)
(B) Only consumers
(C) Only decomposers
(D) Nothing captures it
10. How do producers capture energy? [1]
(A) Through photosynthesis
(B) Through respiration only
(C) Through decomposition
(D) Through predation
11. What are primary consumers? [1]
(A) Herbivores
(B) Carnivores only
(C) Producers
(D) Decomposers
12. What percentage of energy transfers between trophic levels? [1]
(A) About 10%
(B) About 100%
(C) About 50%
(D) About 1%
13. What happens to the rest of the energy? [1]
(A) It's lost as heat
(B) It disappears completely
(C) It transfers fully
(D) It increases
14. What is this called? [1]
(A) The 10% law
(B) The 100% law
(C) The heat law
(D) No specific law
15. What is a food web? [1]
(A) Interconnected food chains
(B) A single food chain
(C) No connection between chains
(D) Only producers connected
16. Why learn about energy flow in ecosystems? [1]
(A) To understand ecological energy transfer
(B) No reason
(C) It's not useful
(D) Only for tests