Which one is a mangrove plant

Options

A. Rhizophora
B. Acacia
C. Pinus
D. Tectona grandis

Answer

To determine which of the given options is a mangrove plant, we can analyze each option based on their characteristics and habitat.

### 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 are crucial for coastal ecosystems.

2. **Analyzing the Options**:
- **Option A: Rhizophora**: This is a genus of tropical mangrove trees. They are known for their adaptations to coastal environments, including aerial prop roots that help them survive in saline water. The most notable species is the red mangrove (Rhizophora mangle).
- **Option B: Acacia**: This is a genus of trees and shrubs that are typically found in dry, arid regions and are not adapted to coastal saline environments.
- **Option C: Pinus**: This is a genus of coniferous trees commonly known as pines. They grow in a variety of environments but are not associated with mangrove ecosystems.
- **Option D: Tectona Grandis**: Commonly known as teak, this tree is found in tropical forests and is not a mangrove plant.

3. **Identifying the Correct Answer**:
- Based on the characteristics and habitat of each option, **Rhizophora** is the only genus that fits the definition of a mangrove plant. Therefore, the correct answer is **Option A: Rhizophora**.

### Conclusion:
The correct answer is **Option A: Rhizophora**, as it is a genus of tropical mangrove trees.