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An ecological "Niche" can be defined as _________ .

  • A.The various habitats an organism may inhabit
  • B.The specific environment an organism inhabits
  • C.The role an organism plays in its community
  • D.The inorganic, non-living aspects of a given area

Answer: C

An ecological niche is best defined as the role an organism plays in its community.

A niche is the functional position of a species in its ecosystem: what it eats, what eats it, when and where it is active, the resources it uses and how it affects other organisms. Ecologists often put it as 'the habitat is the address, the niche is the profession'.

The specific environment an organism inhabits is its habitat, the usual confusion. The range of habitats it may occupy describes its distribution, and the inorganic, non-living features of an area are its abiotic factors. None of these is the niche.

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