In Potato type, the stomata remain open

Options

A. Throughout day and night
B. 24 hours except for a few hours during day time
C. 24 hours except for a few hours during night
D. All the above.

Answer

**Step-by-Step Solution:**

1. **Understanding Stomata Function**: Stomata are small openings on the surface of leaves that facilitate gas exchange (CO2 in, O2 out) and transpiration (water vapor loss).

2. **Identifying Stomatal Behavior in Potato Type**: The potato type of stomata is characterized by their behavior of remaining open continuously.

3. **Clarifying the Conditions**: In the potato type, stomata remain open throughout both day and night. They only close during periods of water stress, which occurs when the plant is unable to absorb enough water to meet its transpiration needs.

4. **Evaluating the Options**:
- "Throughout day and night" - This aligns with the potato type behavior.
- "24 hours except for a few hours during daytime" - This is incorrect as it implies intermittent closure during the day.
- "24 hours except for a few hours during night" - This is also incorrect for the same reason.
- "All the above" - This is incorrect as well since only one option is correct.

5. **Conclusion**: The correct answer is that in potato type, the stomata remain open throughout the day and night.

**Final Answer**: Throughout day and night.

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