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Organisms and Populations

Short Answer Type

31. What is brood parasitism ? Give an example.

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32. List a few adaptations which parasites have developed.

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Long Answer Type

33. Define mutualism. Give examples.

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Short Answer Type

34. Describe the phenomenon of parasitism.

Parasitism. It is a type of interaction in which one species called the parasite derives food and shelter from the other species called host. The parasite is benefited and the host is harmed.

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35. Describe the phenomenon of commensalism with an example of commensal between an orchid growing as an epiphyte on a mango branch.

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36. Describe the phenomenon of mutualism with the example of lichen.

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37. What is immigration and emigration ?

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38. Explain Gause’s competitive exclusion principle.

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39. How is diapause different from hibernation ?

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40. What do you understand by resource partitioning.

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