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Organisms and Populations — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYOrganisms and Populations3 Marks
Question
Explain with the help of an example, each of the three population interactions, where the organisms live closely together.
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Answer

In predation, parasitism and commensalism the interacting species live closely together.
  1. Predation: It is the interspecific interaction, in which a larger animal, called predator, kills together and consumes a smaller animal, called prey,
Example: a tiger killing and eating a deer.
  1. Parasitism: It is the interspecific interaction, in which one species, called parasite, takes food and shelter from another living species, called host,
Example: tapeworm in the intestine of man.
  1. Commensalism: It is the interspecific interaction, in which one species is benefitted and the other is neither benefitted nor harmed, i.e. neutral,
Example: an orchid plant growing on a mango tree.

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