Assertion (A): Hibernation during winter an aestivation during summer is seen in frogs.
Reason (R): Frogs are poikilotherms.

Options

A. Both A and R are true and R is the correct explanation for A.
B. Both A and R are true but R is not the correct explanation for A.
C. A is true and R is false.
D. A is false and R is true.

Explanation

To solve the question, we need to analyze both the assertion (A) and the reason (R) provided.

### Step-by-Step Solution:

1. **Understanding the Assertion (A)**:
- The assertion states that "Hibernation during winter and aestivation during summer is seen in frogs."
- Hibernation refers to a state of inactivity and metabolic depression in animals during winter, while aestivation refers to a similar state during hot and dry periods, typically in summer.
- Frogs do indeed undergo hibernation in winter to conserve energy and survive cold temperatures, and they also undergo aestivation in summer to avoid desiccation and extreme heat.
...