Characteristic feature of mangrove plants is

Options

A. Apospory
B. Heterospory
C. Parthenocarpy
D. Vivipary

Answer

### Step-by-Step Solution

1. **Understanding Mangrove Plants**:
- Mangrove plants are specialized trees and shrubs that grow in coastal intertidal zones. They are adapted to saline environments and play a crucial role in coastal ecosystems.

2. **Identifying Key Characteristics**:
- Among the various characteristics of mangrove plants, one of the most significant is their reproductive strategy.

3. **Exploring Reproductive Strategies**:
- Mangroves exhibit a unique form of reproduction known as vivipary. This means that the seeds (or propagules) germinate while still attached to the parent tree.

4. **Defining Vivipary**:
- In viviparous plants, the embryonic development occurs within the fruit, and the young plant begins to grow while still attached to the parent. This adaptation helps ensure that the seedlings are ready to survive in the challenging conditions of their environment.

5. **Conclusion**:
- Therefore, the characteristic feature of mangrove plants is **vivipary**. This distinguishes them from other plant types that may reproduce differently, such as through seeds that fall to the ground and germinate independently.