Finely dissected leaves occur in

Options

A. Rooted floating leaved plants
B. Submerged plants
C. Emerged plants
D. Free floating plants.

Answer

**Step-by-Step Solution:**

1. **Understand the Question**: The question asks about the type of plants that have finely dissected leaves. It is important to identify the characteristics of the options provided.

2. **Analyze the Options**:
- **Rooted Floating-Leaved Plants**: These plants have roots anchored to the substrate but their leaves float on the water surface. They typically do not have finely dissected leaves as they are adapted to a different environment.
- **Submerged Plants**: These plants are entirely underwater. They often have finely dissected leaves, which are adapted to reduce resistance to water currents and prevent damage from turbulence. This is a key characteristic of submerged plants.
- **Emerged Plants**: These plants grow above the water surface. They generally have broader leaves that are not finely dissected, as they are not subjected to the same water currents as submerged plants.
- **Free Floating Plants**: These plants float on the water surface but do not have roots anchored in the substrate. Similar to emerged plants, they typically do not have finely dissected leaves.

3. **Identify the Correct Answer**: Based on the analysis, the option that correctly identifies the plants with finely dissected leaves is **submerged plants**.

4. **Conclusion**: Therefore, the correct answer to the question is that finely dissected leaves occur in **submerged plants**.

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