Which term describes a group of similar organisms that can breed and produce fertile offspring?

• A. Species
• B. Mimicry
• C. Parasitism
• D. Commensalism

Answer: (A)

The main idea here is a group that can interbreed to create fertile offspring. This is captured by the biological species concept: members of a species share a gene pool and can exchange genes through reproduction, while different groups do not successfully interbreed to produce fertile offspring. So the term that fits is a group of organisms that can breed and produce fertile offspring.

The other terms describe interactions or traits, not what defines a group of organisms as a species. Mimicry is protective resemblance to another organism or object. Parasitism is a relationship where one partner benefits at the host's expense. Commensalism is a relationship where one partner benefits and the other is unaffected.