Question

A group of closely related, structurally and functionally similar organism which interbreed with one another in nature, but not with organisms of other groups is known as

• A. Order
• B. Family
• C. Species
• D. Genus

Answer 1

Answer: (C)

• Species: a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding. The species is the principal natural taxonomic unit, ranking below a genus and denoted by a Latin binomial, e.g. Homo sapiens.
• A genus is a rank in the biological classification (or taxonomy). It stands above species, and below families. A genus can include more than one species. When biologists talk about a genus, they mean one or more species of animals or plants that are closely related to each other.
• A family is one of the eight major taxonomic ranks; it is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks above the rank of genus.

So, the correct answer is 'Species'.