If long filament attached to the back of the anther at a point only, so that the anther can swing freely, This condition is called –

Options

A. Basifixed
B. Dorsifixed
C. Versatile
D. Adnate

Answer

To solve the question regarding the condition where a long filament is attached to the back of the anther at a single point, allowing the anther to swing freely, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of the Anther**: The anther is part of the stamen in flowering plants, which is responsible for producing pollen. The filament is the stalk that supports the anther.

2. **Identify the Types of Attachment**: There are different ways the filament can be attached to the anther:
- **Basifixed**: The filament is attached at the base of the anther.
- **Dorsifixed**: The filament is attached to the back of the anther.
- **Versatile**: The filament is attached at the center of the anther, allowing it to swing freely.
- **Adnate**: The filament and the connective appear to be one structure.

3. **Analyze the Question**: The question states that the anther can swing freely, which indicates that the attachment must allow for movement.

4. **Evaluate the Options**:
- **Basifixed**: This would not allow for swinging as it is fixed at the base.
- **Dorsifixed**: This allows some movement but not free swinging.
- **Versatile**: This allows the anther to swing freely because it is attached at a single point in the center.
- **Adnate**: This would not allow for swinging as the filament and connective are fused.

5. **Select the Correct Answer**: Given that the anther can swing freely, the correct condition is **Versatile**.

### Final Answer:
The condition where a long filament is attached to the back of the anther at a single point, allowing the anther to swing freely, is called **Versatile**.

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