Pollen tube contains______

Options

A. one male nucleus
B. two male nuclei
C. three male nuclei
D. four male nuclei

Answer

To answer the question "Pollen tube contains______," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Pollen Tube Formation**:
- Pollen grains are produced in the anthers of the stamen in flowers. When pollen grains land on the stigma of a flower, they begin to germinate and form a pollen tube.

2. **Components of Pollen Grain**:
- A pollen grain typically contains two types of cells: a vegetative cell and a generative cell.

3. **Division of Generative Cell**:
- The generative cell undergoes mitotic division. This means it divides to produce two male gametes (sperm cells).

4. **Contents of the Pollen Tube**:
- As the pollen tube grows, it carries these two male gametes towards the ovule, where fertilization will occur.

5. **Conclusion**:
- Therefore, the pollen tube contains **two male nuclei** (from the two male gametes produced by the division of the generative cell).

### Final Answer:
The pollen tube contains **two male nuclei**.

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