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Class 12 Biology Practice Test: Organisms and Populations - Population Interactions
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Class 12 Biology Practice Test: Organisms and Populations - Population Interactions
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25 Questions

1. What is Encarsia perplexa example of?
2. Which type of interaction does a mycorrhiza show?
3. In which two species apparent competition occurs indirectly?
4. Who does a pilot fish accompanies for feeding on falling pieces of food?
5. Which organisms eat each other and form various levels of the food pyramid?
6. In which condition the prey might become extinct?
7. Which relationship does an orchid growing as an epiphyte on a tree describe?
8. What is a relationship in which larval development of one organism occurs inside or on the surface of another organism resulting in the death of the host called?
9. Who produces the cellulase in the intestine of ungulates?
10. Which one of the following is a chemical produced by plants against grazers and browsers?
11. Which is an important predator in the rocky intertidal communities of the American Pacific Coast?
12. The cattle egret shows commensalism with which organism?
13. Which statement is incorrect about the competition?
14. Which of the two are synonyms?
15. What are insects living on plant sap called?
16. Where do ectoparasites reside?
17. What is the phenomenon called in which two species competing for the same resources can avoid competition by choosing?
18. Pseudo-copulation occurs in which of the following flower?
19. Where the interference competition does occur directly between individuals?
20. Which statement is false about parasitism?
21. Who benefits the ungulates?
22. Which plant has lost its chlorophyll and leaves in the course of evolution?
23. Where do endo-parasites reside?
24. In which of the following the young bird is brought up by along other birds?
25. What percent of land plants rely on mycorrhizal relationships?