Mangroves are

Options

A. gymnosperms
B. dicots
C. monocots
D. No adventitious roots

Answer

**Step-by-Step Solution:**

1. **Understanding Mangroves**:
- Mangroves are a type of plant that typically grow in coastal intertidal zones. They are adapted to saline environments and are crucial for coastal protection and biodiversity.

2. **Scientific Classification**:
- The scientific name of mangroves is *Rhizophora mangle*, and they belong to the family Rhizophoraceae. This classification helps in understanding their biological characteristics.

3. **Identifying the Type of Plant**:
- Mangroves are classified as dicots. In botanical terms, dicots (or dicotyledons) are characterized by having two seed leaves (cotyledons) upon germination.

4. **Special Features of Mangroves**:
- Mangroves have a unique feature of producing adventitious aerial roots, which provide extra support and stability. These roots are also known as respiratory roots or knee roots, as they project above the mud and have lenticels for gas exchange.

5. **Evaluating the Options**:
- **Option A: Gymnosperms** - Incorrect, as gymnosperms do not have flowers and reproduce via exposed seeds.
- **Option B: Dicots** - Correct, as mangroves are flowering plants with two seed leaves.
- **Option C: Monocots** - Incorrect, as monocots have only one seed leaf.
- **Option D: No adventitious roots** - Incorrect, as mangroves do have adventitious roots.

6. **Conclusion**:
- Based on the analysis, the correct answer is that mangroves are **dicots**.