Self dispersal mechanism is called

Options

A. zoochory
B. explosive mechanism
C. forced zoochory
D. hydrochory

Answer

To answer the question "Self dispersal mechanism is called," we need to understand the different types of seed dispersal mechanisms and identify which one refers to self-dispersal.

### Step-by-Step Solution:

1. **Understanding Seed Dispersal**: Seed dispersal is the movement or transport of seeds away from the parent plant. This is crucial for the survival and growth of the plant species, as it helps avoid competition for resources.

2. **Types of Seed Dispersal**: Seed dispersal can be categorized into two main types:
- **Autocory**: This refers to self-dispersal mechanisms where the plant disperses its seeds by its own means.
- **Allocory**: This involves external agents (like wind, water, or animals) that help in the dispersal of seeds.

3. **Identifying Self-Dispersal**: The question specifically asks for a self-dispersal mechanism, which falls under the category of autocory.

4. **Explosive Mechanism**: Within autocory, there are various mechanisms, one of which is the explosive mechanism (also known as ballistic dispersal or balochory). This mechanism involves the forceful ejection of seeds from the fruit due to internal pressure (turgor pressure) that causes the fruit to burst open.

5. **Analyzing the Options**:
- **Zucory**: This refers to seed dispersal by animals (allocory).
- **Explosive Mechanism**: This is the correct answer as it refers to self-dispersal.
- **Forced Zucory**: This also involves animals and is not related to self-dispersal.
- **Hydrochory**: This refers to water-based dispersal (allocory).

6. **Conclusion**: Based on the definitions and analysis, the self-dispersal mechanism is called the **Explosive Mechanism**.

### Final Answer:
The self-dispersal mechanism is called the **Explosive Mechanism**.