Question

The niche of population is
A. Set of condition where it interacts
B. Place where it lives
C. Set of conditions and resources it uses
D. Geographical area that it covers

Answer 1

A population in biology is a number of all organisms of the same genus or species that live in and are capable of interbreeding in a specific geographical region. The sexual population area is the area where interbreeding between any pair within the region is possible and is more likely than cross-breeding with individuals from other regions.

Complete Answer:
- A niche is a concept in ecology that describes the relational role of a species or population in an ecosystem.
- More formally, the niche includes how a population reacts to the abundance of its resources and enemies (e.g., by increasing when resources are abundant and predators, pests and pathogens are scarce) and how it affects those same factors ( e.g., by decreasing the abundance of resources by consumption and by falling prey to them by leading to the population growth of enemies).
- The abiotic or physical environment is also part of the niche since it affects how resources and enemies impact, and are influenced by, populations.
- A niche description can include details of the life history of the organism, environment, and position in the food chain.
- The preliminary description presented above reveals that there are two sides to the idea of niche that are not so closely related: one concerns the effects of the ecosystem on a species, the other the impacts of a species on the ecosystem.

The correct answer is option(B) Place where it lives.

Note: Occupying a very particular niche can be beneficial for an organism: they can face less interspecific rivalry in this way. Niche specialists are called such creatures. However, when there is a sudden decline or change in biotic or abiotic factors, specialist organisms that inhabit a very small or highly specialised niche face problems; if the organism is unable to adapt to the change, it becomes extremely vulnerable to population decline or extinction.