A) ecosystem
B) niche
C) adaptation
D) biome groups
Correct Answer: B
Solution :
Niche or ecological niche of an organism includes the physical space occupied by it, its functional role in the community, ie, trophic position and its position in the environment gradient of temperature, moisture, pH, soil etc, and the condition of existence. Ecosystem is ecological system formed by interaction of co-acting organisms and their environment, ie, a group of interacting organisms alongwith their environment that operates as a system. Adaptation is process of adjustment of an organism in particular set of habitat conditions. Biome is a major ecological community of organisms maintained under particular climate zone.
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