A) home range
B) tersitory
C) boundary
D) niche
Correct Answer: D
Solution :
An ecological niche involves not only the physical space occupied by an organism but also its functional role in the community and its position in environmental gradient. The term niche for the first time was used by Grinnel (1971). Individuals, pairs or family groups of vertebrates and higher invertebrates commonly restrict their activities to a definite area termed the home range .
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