Angiosperm having hapera is

Options

A. Podostemon
B. Pogostemon
C. Trapa
D. Podophyllum.

Answer

To solve the question "Angiosperm having haptera is," we will analyze the options provided and determine which one is associated with haptera.

### Step-by-Step Solution:

1. **Understanding Haptera**:
- Haptera, also known as holdfast, is a structure that helps in anchoring or fixing an aquatic plant to a substrate, such as rocks. This is crucial for plants that grow in aquatic environments.

2. **Analyzing the Options**:
- **Option 1: Podostemon**:
- This plant belongs to the family Podostemaceae. It is an aquatic plant that possesses thread-like structures (haptera) that help it attach to rocks in its environment. Therefore, this option is likely correct.

- **Option 2: Pogostemon**:
- This plant belongs to the family Lamiaceae. It is not an aquatic plant and does not have haptera. Thus, this option is incorrect.

- **Option 3: Trapa**:
- Commonly known as water caltrap or buffalo nut, Trapa is also not primarily characterized by haptera. It is a water plant but does not fit the definition of having haptera as its main anchoring structure. Therefore, this option is incorrect.

- **Option 4: Podophyllum**:
- This is a herbaceous plant that does not grow in aquatic environments and does not possess haptera. Hence, this option is also incorrect.

3. **Conclusion**:
- After analyzing all options, the only angiosperm that has haptera is **Podostemon**. Therefore, the correct answer is **Option 1: Podostemon**.

### Final Answer:
**Podostemon**