Submerged hydrophytes have commonly dissected leaves for

Options

A. Decreasing surface area
B. Increasing surface area
C. Reducing effect of water currents
D. increasing number of stomata

Explanation

### Step-by-Step Solution:

1. **Understanding Submerged Hydrophytes**: Submerged hydrophytes are aquatic plants that grow entirely underwater. Their adaptations are crucial for survival in aquatic environments.

2. **Analyzing Leaf Structure**: The leaves of submerged hydrophytes are often dissected or divided. This means they have many small, thin segments instead of broad, flat leaves.

3. **Identifying the Function of Dissected Leaves**: The primary function of having dissected leaves is to increase the surface area. A larger surface area allows for more efficient absorption of water and minerals from the surrounding environment.

4. **Considering Water Resistance**: Dissected leaves also help in minimizing water resistance. In flowing water, broad leaves can be damaged by currents, while dissected leaves can reduce drag and potential harm.

5. **Evaluating the Options**:
- Option 1 (Decreasing surface area) is incorrect, as dissected leaves actually increase surface area.
- Option 2 (Increasing surface area) is correct, as explained.
- Option 3 (Reducing the effect of water currents) is also correct, as dissected leaves are less likely to be damaged by water movement.
- Option 4 (Increasing the number of stomata) is not directly relevant to the dissection of leaves.

6. **Conclusion**: The best answer is that submerged hydrophytes have commonly dissected leaves for increasing surface area, which aids in absorption and photosynthesis while minimizing damage from water currents.

### Final Answer:
Submerged hydrophytes have commonly dissected leaves for **increasing surface area**.

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