Q98.
Which one of the following terms describes not only the physical space occupied by an organism, but also its functional role in the community of organisms?
Answer
B
Explanation
The ecological niche is the ecological role and space that an organism fills in an ecosystem. It encompasses both the place where an organism lives AND what it does in its habitat — its functional role (feeding, reproducing, interacting). Habitat is only the physical space. Ecotone is a transition zone between two biomes.