Two species of hen X and Y breed in the month of April and November respectively. They cannot interbreed due to_____

Options

A. Temporal isolation
B. Mechanical isolation
C. Physiological isolation
D. Behavioural isolation

Explanation

**Step-by-Step Solution:**

1. **Identify the Species and Their Breeding Times**: We have two species of hen, X and Y. Species X breeds in April, while species Y breeds in November.

2. **Understand the Concept of Reproductive Isolation**: Reproductive isolation is a mechanism that prevents different species from interbreeding. This can occur due to various factors, including temporal isolation, which is related to the timing of reproduction.

3. **Define Temporal Isolation**: Temporal isolation is a specific type of reproductive isolation where two species breed at different times of the year or different times of the day. In this case, species X and Y breed in different months (April and November), which creates a temporal barrier.

4. **Conclude the Reason for Inability to Interbreed**: Since species X and Y breed at different times of the year, they cannot mate with each other. This is the reason they cannot interbreed, which is due to temporal isolation.

5. **Final Answer**: The two species of hen X and Y cannot interbreed due to **temporal isolation**.

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