Transfer of pollen grains from anther to the stigma of another flower on the same plant is called

Options

A. Xenogamy
B. Geitonogamy
C. Karyogamy
D. Autogamy

Answer

To solve the question regarding the transfer of pollen grains from the anther to the stigma of another flower on the same plant, we will analyze the options provided and determine the correct term for this process.

### Step-by-Step Solution:

1. **Understanding the Question**:
The question asks for the term that describes the transfer of pollen grains from the anther (the male part of the flower) to the stigma (the female part of the flower) of another flower on the same plant.

2. **Analyzing the Options**:
We have four options to consider:
- Option A: Xenogamy
- Option B: Ketonogamy
- Option C: Karyogamy
- Option D: Autogamy

3. **Evaluating Each Option**:
- **Xenogamy**: This term refers to the transfer of pollen grains from the anther of one flower to the stigma of a flower on a different plant. Since the question specifies "another flower on the same plant," this option is incorrect.

- **Ketonogamy**: This term refers to the transfer of pollen grains between different flowers of the same plant. This matches the description in the question, making it a potential correct answer.

- **Karyogamy**: This term refers to the fusion of two nuclei within a cell. It is not related to the process of pollination and is therefore incorrect.

- **Autogamy**: This term refers to the transfer of pollen grains from the anther to the stigma of the same flower. Since the question specifies another flower, this option is also incorrect.

4. **Conclusion**:
After evaluating all options, the correct answer is **Ketonogamy** (Option B), as it describes the transfer of pollen grains from the anther to the stigma of another flower on the same plant.

### Final Answer:
The transfer of pollen grains from the anther to the stigma of another flower on the same plant is called **Ketonogamy**.