Which of the following does not possess stomata ?

Options

A. Hydrophytes
B. Submerged hydrophytes
C. Xerophytes
D. Mesophytes

Answer

To determine which of the following does not possess stomata, we need to analyze the options provided: hydrophytes, submerged hydrophytes, xerophytes, and mesophytes.

### Step-by-Step Solution:

1. **Understand the Function of Stomata**:
- Stomata are small openings on the surface of leaves that allow for gas exchange (CO2 in, O2 out) and transpiration (release of water vapor).

2. **Identify the Types of Plants**:
- **Hydrophytes**: These are plants that live in water. They usually have stomata but may have adaptations for their aquatic environment.
- **Submerged Hydrophytes**: These plants are completely underwater. Since they are submerged, they do not need stomata for gas exchange or transpiration.
- **Xerophytes**: These are plants adapted to dry environments. They have stomata but often close them to minimize water loss.
- **Mesophytes**: These plants grow in moderate environments and possess stomata for gas exchange.

3. **Analyze Each Option**:
- **Hydrophytes**: Generally have stomata.
- **Submerged Hydrophytes**: Do not possess stomata as they are fully submerged in water and can absorb gases directly from the water.
- **Xerophytes**: Have stomata, adapted to conserve water.
- **Mesophytes**: Have stomata for gas exchange.

4. **Conclusion**:
- The type of plant that does not possess stomata is **submerged hydrophytes**.

### Final Answer:
**Submerged hydrophytes do not possess stomata.**