Question
Explain with the help of an example, each of the three population interactions, where the organisms live closely together.

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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