When two species reproduce at different times, the situation is called:

• A. Behavioral isolation
• B. Geographical isolation
• C. Temporal isolation
• D. Mechanical isolation

Answer: (C)

Verified step by step guidance

1. Understand the concept of reproductive isolation, which prevents different species from interbreeding and producing viable offspring. Reproductive isolation can occur due to various mechanisms, such as temporal, behavioral, geographical, or mechanical isolation.
2. Define temporal isolation: This occurs when two species reproduce at different times, such as different seasons, times of day, or years. This prevents them from mating even if they are in the same location.
3. Compare temporal isolation with other types of isolation: Behavioral isolation involves differences in mating behaviors or rituals, geographical isolation occurs when species are separated by physical barriers, and mechanical isolation happens when physical differences prevent successful mating.
4. Identify the key detail in the problem: The question specifies that the species reproduce at different times, which directly aligns with the definition of temporal isolation.
5. Conclude that the correct answer is temporal isolation, as it specifically addresses the situation where species reproduce at different times.