NEET Biology: Concept of species Practice Questions

Correct answer: B — reproductive isolation

The core concept of a biological species centers on reproductive isolation, meaning populations are reproductively isolated from each other.

Correct answer: A — Subspecies

A subspecies is a division below the species level, characterized by geographical isolation and minor, distinct variations within a species.

Correct answer: C — Binomial nomenclature

Binomial nomenclature is the two-part naming system (Genus and species) used universally for naming organisms, as established by Linnaeus.

Correct answer: B — Species

A species is defined as a group of organisms that can interbreed and produce fertile offspring, but are reproductively isolated from other such groups.

Correct answer: D — Family

The standard taxonomic hierarchy is Kingdom, Phylum, Class, Order, Family, Genus, Species. Family is immediately below Genus.

Correct answer: A — Reproductive isolation

The Biological Species Concept defines a species as a group of actual or potential members of a species whose members can interbreed and produce fertile offspring. Reproductive isolation is key.

Correct answer: B — Reproductive isolation

The biological species concept emphasizes that species are groups of populations that have the potential to interbreed in nature but are reproductively isolated from other such groups.

Correct answer: B — To define the boundaries between species

Observable morphological characteristics (physical structure) are used by taxonomists to group organisms and delineate the boundaries of different species.

Correct answer: C — binomial nomenclature

Binomial nomenclature is the universally accepted two-part naming system (Genus and species) used for naming organisms in taxonomy.

Correct answer: C — Species

A species is defined by the ability of its members to successfully interbreed and produce viable, fertile offspring.

Correct answer: A — Variation within a single species

Intraspecific variation is the variation that occurs among individuals belonging to the same species.

Correct answer: D — Ability to interbreed

The Biological Species Concept defines a species as a group of interacting populations of living organisms that are capable of interbreeding and producing fertile offspring.

Correct answer: A — Reproductive isolation

The biological species concept emphasizes reproductive isolation—the inability of two populations to interbreed and produce fertile offspring—as the primary criterion for species demarcation.

Correct answer: B — Subspecies

Geographical separation leading to distinct, localized variations within a species defines the concept of a subspecies.

Correct answer: A — Species

The defining characteristic of a species is the ability of members of that group to interbreed and produce viable, fertile offspring.