Question

Niche overlap is
A. Mutualism between two species
B. Active cooperation between two species
C. Two different parasites on the same host
D. Sharing resources between two species

Answer 1

Hint: In niche overlap, same assets or other environmental variables are used by two organismic units. The ecological niche is a specific part of the ecosystem inhabited by individuals of a species that is limited by their tolerance, freedom, range of motion, microclimate, type and availability of food, shelter, type of predator and timing of activity.

Complete answer: Niche overlap is when two species compete for the same restrictive resource so that they overlap and develop similar characteristics. By resource partitioning, the niche overlap is reduced. In order to satisfy niche size on an appropriate level, the process of moving things around involves separate resources. The ways in which species divide available resources among themselves within ecological communities is a major determinant of the diversity of coexisting species. Habitat has many niches that are environmentally friendly and houses a variety of animals. A single species makes use of an ecological niche. There is no overlap if two niches are entirely separate. Despite having a mutual relationship, two or more species cannot use the same niche. Niche overlap of a finite resource for which they compete has organisms or species that compete. Both the owl and the cat feed on mice as well as shrews. Since they are ecological equivalents, although their environments are different, they live in the same niche.
Hence, the correct answer is option D.

Note: The niche concept has gradually become linked to the phenomenon of interspecific competition, and it is increasingly becoming identified with patterns of resource utilization. Niche relationships among members of competitive communities are usually modelled with bell-shaped utilization curves along a resource spectrum such as height above ground or prey size.