Assertion (A): Guttation occurs throughout the day in plants.
Reason (R): Stomata have guard cells which open and close and help in transpiration.

Options

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

Explanation

To analyze the assertion and reason provided in the question, we can break it down step by step:

### Step 1: Understand Guttation
- **Definition**: Guttation is the process where water is expelled from the leaves of plants in the form of liquid droplets.
- **Timing**: Guttation primarily occurs at night or early morning when the humidity is high and transpiration rates are low.

### Step 2: Analyze the Assertion (A)
- **Assertion**: "Guttation occurs throughout the day in plants."
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