Question Paper
Class / Subject: Class 8 (SSC) · Science (सामान्य विज्ञान)
Chapter: Chapter 18 — Chapter 18: Ecosystems
Time Allowed: 32 minutes
Max Marks: 16
1. What does an ecosystem include? [1]
(A) Biotic and abiotic components
(B) Only living things
(C) Only non-living things
(D) Neither living nor non-living things
2. What are biotic components? [1]
(A) Living things like plants and animals
(B) Non-living things
(C) Only water
(D) Only rocks
3. What are abiotic components? [1]
(A) Non-living things like water and soil
(B) Living things only
(C) Only animals
(D) Only plants
4. How does energy flow in an ecosystem? [1]
(A) Through food chains and webs
(B) Randomly, with no pattern
(C) It doesn't flow at all
(D) Only through water
5. Where does energy flow start from? [1]
(A) Producers (plants)
(B) Only consumers
(C) Only decomposers
(D) Nowhere specific
6. What is an example of a terrestrial ecosystem? [1]
(A) A forest
(B) A pond
(C) An ocean
(D) A river
7. What is an example of an aquatic ecosystem? [1]
(A) A pond
(B) A forest
(C) A desert
(D) A grassland
8. Why is ecological balance important? [1]
(A) Disturbing one part affects the whole system
(B) It's not important
(C) No reason
(D) Only for looks
9. What does an ecosystem include? [1]
(A) Biotic and abiotic components
(B) Only living things
(C) Only non-living things
(D) Neither living nor non-living things
10. What are biotic components? [1]
(A) Living things like plants and animals
(B) Non-living things
(C) Only water
(D) Only rocks
11. What are abiotic components? [1]
(A) Non-living things like water and soil
(B) Living things only
(C) Only animals
(D) Only plants
12. How does energy flow in an ecosystem? [1]
(A) Through food chains and webs
(B) Randomly, with no pattern
(C) It doesn't flow at all
(D) Only through water
13. Where does energy flow start from? [1]
(A) Producers (plants)
(B) Only consumers
(C) Only decomposers
(D) Nowhere specific
14. What is an example of a terrestrial ecosystem? [1]
(A) A forest
(B) A pond
(C) An ocean
(D) A river
15. What is an example of an aquatic ecosystem? [1]
(A) A pond
(B) A forest
(C) A desert
(D) A grassland
16. Why is ecological balance important? [1]
(A) Disturbing one part affects the whole system
(B) It's not important
(C) No reason
(D) Only for looks