Describe the phenomenon of commensalism with an example of commen

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 Multiple Choice QuestionsShort 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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 Multiple Choice QuestionsLong Answer Type

33. Define mutualism. Give examples.
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 Multiple Choice QuestionsShort Answer Type

34. Describe the phenomenon of parasitism.
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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.


Commensalism. It is defined as the interspecific interaction where one species is benefited while the other species is neither benefited nor harmed.

Example. Orchids grow as epiphytes on the mango tree. The orchids use the tree as a support for growth , whereas the mango tree is neither harmed nor benefited.

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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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