Stomata when open lead to

Options

A. Exchange of gases
B. Evaporation of water
C. uptake of carbon dioxide
D. All of these

Answer

**Step-by-Step Solution:**

1. **Understanding Stomata**: Stomata are small openings located on the surfaces of leaves. They play a crucial role in the processes of gas exchange and transpiration in plants.

2. **Function of Stomata**: When stomata are open, they allow for the exchange of gases between the plant and the atmosphere. This includes the uptake of carbon dioxide (CO2) for photosynthesis and the release of oxygen (O2).

3. **Transpiration Process**: The opening of stomata also facilitates transpiration, which is the process of water vapor loss from the plant. This loss of water helps to create a negative pressure that aids in the uptake of water and nutrients from the roots.

4. **Evaporation of Water**: As stomata open, water evaporates from the leaf surface into the atmosphere. This process is essential for maintaining the plant's internal water balance and temperature regulation.

5. **Conclusion**: Therefore, when stomata are open, they lead to:
- Exchange of gases (uptake of CO2 and release of O2)
- Evaporation of water (transpiration)
- Overall, all these processes are interconnected and essential for the plant's survival.

6. **Final Answer**: The correct answer to the question "Stomata when open lead to?" is **all of these**: exchange of gases, evaporation of water, and uptake of CO2.

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