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Class 12 Biology Practice Test: Biodiversity and Conservation - Importance of Species Diversity to the Ecosystem
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Class 12 Biology Practice Test: Biodiversity and Conservation - Importance of Species Diversity to the Ecosystem
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14 Questions

1. An ecosystem is joined by thousands of species, if a problem occurs causing a species to become extinct, it may not affect the proper functioning of the ecosystem initially, but as more and more species are removed, the ecosystem becomes dangerously weak over a period of time. Which hypothesis gave this sentence?
2. Which community should show less variation in productivity from year to year?
3. What did David Tilman’s experimental plot show?
4. For what reason is rich biodiversity important?
5. What did David Tilman’s experimental plot show?
6. Who gave the ‘Rivet popper hypothesis’?
7. What would happen if the Western Ghats ecosystems are less functional?
8. What is considered as the rivet in the ‘Rivet popper hypothesis’?
9. An ecosystem is joined by thousands of species, if a problem occurs causing a species to become extinct, it may not affect the proper functioning of the ecosystem initially, but as more and more species are removed, the ecosystem becomes dangerously weak over a period of time. Which hypothesis gave this sentence?
10. Which community should show less variation in productivity from year to year?
11. What will happen if instead of 20,000 we have 100,000 species of frogs on Earth?
12. Which of the following is a feature of a stable community?
13. For what reason is rich biodiversity important?
14. Which of the following is a feature of a stable community?

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