Circinate vernation occurs in

Options

A. Equisteum, Nephrolepis, Psilotum
B. Nephrolepis, Adiantum, Pteris
C. Lycopodium, Nephrolepis
D. Psilotum, Nephrolepis, Adiantum

Answer

**Step-by-Step Solution:**

1. **Understanding Circinate Vernation**:
- Circinate vernation refers to the arrangement of new leaves (fronds) in a tightly coiled or curled manner as they emerge from the plant. This helps protect the tender growing parts of the leaf.

2. **Identifying the Types of Plants**:
- The question provides four options of plants. We need to identify which of these plants exhibit circinate vernation.

3. **Analyzing Each Option**:
- **Option 1**: Equisetum, Nephrolepis, and Psilotum.
- Equisetum does not exhibit circinate vernation.
- Nephrolepis does exhibit circinate vernation.
- Psilotum also exhibits circinate vernation.
- Therefore, this option is incorrect due to Equisetum.

- **Option 2**: Nephrolepis, Adiantum, and Teres.
- Nephrolepis exhibits circinate vernation.
- Adiantum exhibits circinate vernation.
- Teres also exhibits circinate vernation.
- This option is correct as all three plants show circinate vernation.

- **Option 3**: Lycopodium and Nephrolepis.
- Lycopodium does not exhibit circinate vernation.
- Nephrolepis does exhibit circinate vernation.
- Therefore, this option is incorrect due to Lycopodium.

- **Option 4**: Psilotum and Nephrolepis.
- Psilotum exhibits circinate vernation.
- Nephrolepis exhibits circinate vernation.
- However, since this option does not include all three plants from option 2, it is not the best answer.

4. **Conclusion**:
- The correct answer is **Option 2: Nephrolepis, Adiantum, and Teres**, as all three exhibit circinate vernation.

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