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The interaction, in which one organism is benefitted and the other is neither harmed nor benefitted, is called :

  • A.Symbiosis
  • B.Commensalism
  • C.Parasitism
  • D.Exploitation

Answer: B

The interaction is Commensalism.

In commensalism one species benefits and the other is neither harmed nor helped, as with an orchid growing on a mango branch, or barnacles on a whale.

In mutualism (often loosely called symbiosis) both partners benefit; in parasitism one benefits at the other's expense; exploitation also harms one partner.

A classic animal example is the cattle egret, which feeds on insects disturbed by grazing cattle without affecting them.

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