The stomata of succulents takes up `CO_(2)`

Options

A. during day
B. during night
C. early in morning
D. at noon

Answer

**Step-by-Step Solution:**

1. **Understanding Succulents**: Succulents are plants adapted to arid environments, which means they have developed special mechanisms to conserve water. One of these adaptations involves their stomata.

2. **Stomata Function**: Stomata are small openings on the surface of leaves that allow for gas exchange. In most plants, stomata open during the day to take in carbon dioxide (CO2) for photosynthesis and release oxygen (O2).

3. **Stomata Behavior in Succulents**: Unlike most plants, succulents typically keep their stomata closed during the day to minimize water loss. Instead, they open their stomata at night.

4. **CO2 Uptake at Night**: When the stomata of succulents open at night, they take up CO2 from the atmosphere. This process is part of a specialized form of photosynthesis known as CAM (Crassulacean Acid Metabolism).

5. **Storage and Use of CO2**: The CO2 absorbed at night is stored in the form of organic acids. During the day, when the stomata are closed, the stored CO2 is used for photosynthesis in the presence of sunlight.

6. **Conclusion**: Therefore, the stomata of succulents take up CO2 during the night, which they then utilize for photosynthesis during the day when the stomata are closed.

**Final Answer**: The stomata of succulents take up CO2 during the night.

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