NEET BIOLOGY

Detailed explanation-1: -A population is a group of organisms of the same species, all living in the same area and interacting with each other. Since they live together in one area, members of the same species reproduce together. Ecologists who study populations determine how healthy or stable the populations are.

Detailed explanation-2: -The competitive exclusion principle says that two species can’t coexist if they occupy exactly the same niche (competing for identical resources). Two species whose niches overlap may evolve by natural selection to have more distinct niches, resulting in resource partitioning.

Detailed explanation-3: -Population = A group of organisms of one species that interbreed and live in the same place at the same time. Community = A collection of several (or all of the) interacting populations that inhabit a common environment.

Detailed explanation-4: -What is the advantage of each bird species having a different niche? (1) As the birds feed higher in the tree, available energy increases. (2) More abiotic resources are available for each bird. (3) Predators are less likely to feed on birds in a variety of locations.