First slide

Organism and its Environment

Question

Niche is

Moderate

A

all the biological factors in the organism's environment
B

the physical space where an organism lives
C

the range of temperature that the organism needs to live
D

the functional role played by the organism where it lives

Solution

Niche is the functional role played by the organism where it lives. Each organism has an invariably defined range of conditions that it can tolerate, diversity in the resources it utilises and a distinct functional role in the ecological system, all these together comprise its niche. Eugene P. Odum describes that “The ecological niche of an organism depends not only on where it lives but also on what it does. By analogy, it may be said that the habitat is the organism’s “address”, and the niche is its “profession” .

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