Plants exchange water with environment through structures by two cells

Options

A. Lenticels
B. Hydathodes
C. Stomata
D. All the above

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:**
The question asks about the structures in plants that facilitate the exchange of water with the environment, specifically mentioning "two cells."

2. **Identifying the Structures:**
The structures responsible for water exchange in plants are known as **stomata**. These are small openings found primarily on the surfaces of leaves.

3. **Components of Stomata:**
Stomata are formed by two specialized cells called **guard cells**. These guard cells surround the stomatal pore and control its opening and closing.

4. **Function of Stomata:**
The primary function of stomata is to facilitate gas exchange. They allow carbon dioxide (CO2) to enter the plant for photosynthesis and enable oxygen (O2) and water vapor to exit. This process of water vapor loss is known as **transpiration**.

5. **Additional Structures:**
While stomata are crucial for gas and water exchange, other structures like **hidathodes** and **lenticels** also play roles in water movement. Hidathodes are involved in guttation, which is the exudation of water from the leaves due to root pressure, while lenticels are involved in gas exchange in the bark but not directly in water exchange.

6. **Conclusion:**
Therefore, the correct answer to the question is that plants exchange water with the environment through **stomata**, which are formed by two guard cells.

---