Number of prothallial cells presnet in the male gametophyte of angiosperms is

Options

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

Answer

To solve the question regarding the number of prothallial cells present in the male gametophyte of angiosperms, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Prothallial Cells**: Prothallial cells are defined as sterile cells that are associated with the male gametophyte. They are specifically linked with the antheridial cells.

2. **Identify the Presence of Prothallial Cells**: It is important to note that prothallial cells are vegetative cells that are found only in gymnosperms and not in angiosperms.

3. **Differentiate Between Gymnosperms and Angiosperms**: Since prothallial cells are present in the male gametophyte of gymnosperms, we need to establish that they do not exist in angiosperms.

4. **Conclude the Number of Prothallial Cells in Angiosperms**: Given that prothallial cells are absent in the male gametophyte of angiosperms, we conclude that the number of prothallial cells present is 0.

5. **Final Answer**: Therefore, the number of prothallial cells in the male gametophyte of angiosperms is 0.