Which group includes green leaf microphyllous plants:-

Options

A. Lycopsida
B. Sphenopsida
C. Psilotopsida
D. Pteropsida

Answer

To determine which group includes green leaf microphyllous plants, we can analyze the characteristics of the given groups: Leucopsida, Phenopsida, Psilotopsida, and Pteropsida.

### Step-by-Step Solution:

1. **Understanding Microphyllous Plants**:
- Microphyllous plants have small leaves with a single vein. This is a key characteristic to identify the correct group.

2. **Analyzing the Groups**:
- **Leucopsida**: This group is characterized by having a sporophyte that is differentiated into stem, root, and leaves. The leaves are indeed microphyllous with a single vein. This group fits the description of green leaf microphyllous plants.
- **Phenopsida**: This group does not typically include microphyllous plants.
- **Psilotopsida**: While this group contains some primitive plants, it does not specifically refer to microphyllous plants.
- **Pteropsida**: This group primarily includes ferns and seed plants, which usually have larger leaves (megaphyllous) rather than microphyllous.

3. **Identifying the Correct Group**:
- Based on the characteristics outlined, **Leucopsida** is the only group that includes green leaf microphyllous plants.

4. **Conclusion**:
- Therefore, the answer to the question is **Lycopsida**.

### Final Answer:
The group that includes green leaf microphyllous plants is **Lycopsida**.