Pollen grain of Capsella is

Options

A. Monocolpate
B. Bicolpate
C. Tricolpate
D. Polycolpate

Answer

To determine the correct classification of the pollen grain of Capsella, we need to analyze the options provided and understand the characteristics of the pollen grains.

### Step-by-Step Solution:

1. **Understanding Pollen Grain Types**:
Pollen grains can be classified based on the number of apertures they possess. The common classifications are:
- Monocolpate: 1 aperture
- Bicolpate: 2 apertures
- Tricolpate: 3 apertures
- Polycolpate: More than 3 apertures

2. **Identifying the Pollen Grain of Capsella**:
Capsella, also known as shepherd's purse, is a flowering plant. The pollen grain of Capsella is specifically known to have three apertures.

3. **Confirming the Aperture Count**:
The tricolpate pollen has three equally spaced apertures that are approximately parallel to the polar axis of the grain. This characteristic is essential in identifying the pollen type.

4. **Eliminating Incorrect Options**:
- **Monocolpate**: Incorrect, as it has only one aperture.
- **Bicolpate**: Incorrect, as it has only two apertures.
- **Polycolpate**: Incorrect, as it has more than three apertures.

5. **Conclusion**:
The correct classification for the pollen grain of Capsella is **tricolpate**, which corresponds to option 3.

### Final Answer:
The pollen grain of Capsella is **tricolpate** (Option 3).

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