How many cells or nuclei are present in mature male gametophyte
of Capsella

Options

A. One
B. Two
C. Three
D. Many

Answer

To determine how many cells or nuclei are present in the mature male gametophyte of Capsella, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Male Gametophyte**: The mature male gametophyte in flowering plants is represented by the pollen grain. In the case of Capsella, we need to focus on the structure of the pollen grain after it has germinated.

2. **Structure of the Pollen Grain**: Initially, the pollen grain consists of two types of cells:
- **Vegetative Cell (Tube Cell)**: This is the larger cell that will develop into the pollen tube.
- **Generative Cell**: This is the smaller cell that will divide to form sperm cells.

3. **Germination Process**: When the pollen grain lands on the stigma of a flower and germinates, the generative cell undergoes mitosis (a type of cell division).

4. **Formation of Sperm Cells**: After mitosis, the generative cell divides to produce two sperm cells. Therefore, at this stage, we have:
- **1 Vegetative Cell** (Tube Cell)
- **2 Sperm Cells** (from the division of the Generative Cell)

5. **Total Count of Cells**: Adding these together, we find:
- Total Cells = 1 (Vegetative Cell) + 2 (Sperm Cells) = 3 Cells

6. **Conclusion**: Thus, the mature male gametophyte of Capsella contains a total of 3 cells.

### Final Answer:
The mature male gametophyte of Capsella has **3 cells**.

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