Assertion: No two species can occupy the same ecological niche in a habitat
Reason: A habitat can contain only one ecological niche.
The place where an organism lives is called its habitat. Habitats are characterized by conspicuous physical features which may include the dominant forms of plant and animal life. Habitat may also refer to the place occupied by an entire biological community. For example, a large number of species are found in a forest habitat. On the other hand, the ecological niche of an organism represents (i) the range of conditions it can tolerate, (ii) the resources it utilizes and (iii) its functional role in the ecosystem. A habitat can contain a variety of species with many different ecological niches. Each species having a distinct niche, and no two species occupy the same niche.