Which is not related with the sexual reproduction in protozoans

Options

A. Cytogamy
B. Autogamy
C. Conjugation
D. Schizogony

Answer

### Step-by-Step Solution:

1. **Understand Protozoans**: Protozoans are simple, mostly unicellular organisms that can be either prokaryotic or eukaryotic. Examples include amoeba and paramecium.

2. **Identify Types of Reproduction**: Protozoans can reproduce both sexually and asexually. Sexual reproduction involves the exchange of genetic material (DNA) between two protozoans, while asexual reproduction does not.

3. **Examine Sexual Reproduction Methods**:
- **Conjugation**: Involves two protozoans (male and female) exchanging plasmid DNA. This is a form of sexual reproduction.
- **Cytogamy**: Involves the fusion of male and female protozoans, but without DNA exchange. This is also considered a type of sexual reproduction due to the cytoplasmic exchange.
- **Autogamy**: Involves a single protozoan that produces male and female gametes, which then fuse. This is another form of sexual reproduction.

4. **Identify Asexual Reproduction Method**:
- **Schizogony**: This is a process where the nucleus divides multiple times (karyokinesis) without the cytoplasm dividing immediately, leading to a multi-nucleated cell. Eventually, cytokinesis occurs, but this method does not involve the exchange of genetic material and is classified as asexual reproduction.

5. **Conclusion**: Among the options provided, **schizogony** is not related to sexual reproduction in protozoans. Therefore, the correct answer is option 4, schizogony.