Ecology and Ecosystem
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Ecology and Ecosystem
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25 Questions

1. The herb stage in a lithosere has predominance of plants like
2. The steps in a food chain or food web are called ______ and represent the _______of an organism.
3. Herbivores are at the second trophic level and can also be called
4. Soil erosion can be prevented by
5. The number of individuals of a species in particular ecosystem at a given time remain constant due to
6. BOD of a pond is related to oxygen in per unit volume of water
7. Soil erosion can be prevented by
8. The advantages of fire
9. Dudhwa National Park is located in
10. Which of the following best describes the concept of an organism's niche?
11. Adaptation of low temperature and freezing in animals occurs due to the production of
12. Ecology is the study of organisms interacting with
13. Series of changes on previously barren area is
14. The frog that feeds on an insect is a
15. Another term for herbivores is
16. Decomposers are important because they
17. In this food chain, grass → rabbit → fox, how much of the energy captured in the grass's tissue is available to the fox?
18. Which of the following is not true for a species?
19. The factor governing the structure of soil are called
20. Several interacting food chains form a
21. Soil salinity is measured by
22. When population reaches carrying capacity
23. Deforestation has an alarming effect on
24. Pyramid of energy in a pond ecosystem is always
25. Pillbugs consume dead organic matter and are most accurately described by the name

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