Which one of the following characters is not shown by Selaginella

Options

A. Circinate venation
B. Precocious germination
C. Microphyllous leaves
D. Protostele

Explanation

To answer the question "Which one of the following characters is not shown by Selaginella?", we will analyze the characteristics of Selaginella and identify which one is absent.

### Step-by-Step Solution:

1. **Understanding Selaginella**:
- Selaginella is a type of pteridophyte, which means it is a vascular plant that has specialized tissues for transporting water and nutrients.

2. **Identifying Key Characteristics**:
- **True Stems, Leaves, and Roots**: Selaginella has true stems, leaves, and roots, along with specialized structures called rhizophores that help anchor the plant.
- **Cercinate Venation**: This is a type of leaf development where leaves uncoil as they grow. However, this characteristic is absent in Selaginella.
- **Precocious Termination**: In Selaginella, seeds can germinate while still attached to the parent plant, which is a characteristic of this plant.
- **Microphyllous Leaves**: Selaginella has small, scaly leaves with negligible leaf gaps, which is a defining feature of this plant.
- **Proto Steel**: Selaginella exhibits the presence of proto steel, which is a primitive type of vascular arrangement.

3. **Identifying the Absent Character**:
- Among the characteristics discussed, **Cercinate Venation** is the one that is not shown by Selaginella.

### Conclusion:
The character that is not shown by Selaginella is **Cercinate Venation**.

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