Which term describes a group of organisms that can interbreed to produce fertile offspring?

• A. Taxonomy
• B. Species
• C. Algae
• D. Zone

Answer: (B)

In biology, a species is defined as a group of organisms that can interbreed to produce fertile offspring and are reproductively isolated from other such groups. This concept explains why members of the same species share a gene pool and can pass on fertile offspring, while members of different species generally cannot produce fertile offspring together. The term is about reproductive compatibility, not just appearance or grouping by habitat.

Taxonomy is the science of naming and classifying organisms, not the definition of what makes a group a species. Algae refers to a broad, often non-monophyletic collection of photosynthetic organisms, not a definition of interbreeding capability. Zone is unrelated to biological classification.