Chlamydomonas shows

Options

A. Isogamy
B. Anisogamy
C. Oogamy
D. All the above.

Answer

**Step-by-Step Solution:**

1. **Understanding Chlamydomonas**:
- Chlamydomonas is a genus of unicellular green algae. Each organism consists of a single cell, which is capable of carrying out all necessary life processes.

2. **Types of Reproduction**:
- Chlamydomonas can reproduce both asexually and sexually. The focus here is on sexual reproduction.

3. **Identifying Modes of Sexual Reproduction**:
- **Isogamy**: This is a type of sexual reproduction where the gametes (reproductive cells) are of similar size and shape. In Chlamydomonas, both gametes are indistinguishable in morphology.
- **Anisogamy**: This type involves the fusion of gametes that are dissimilar in size. In Chlamydomonas, this can occur when gametes differ in size or morphology.
- **Oogamy**: This is a specific type of anisogamy where the male gamete is smaller than the female gamete. Chlamydomonas can also exhibit this mode of reproduction.

4. **Conclusion**:
- Since Chlamydomonas can reproduce through isogamy, anisogamy, and oogamy, the correct answer to the question is that Chlamydomonas shows all of the above modes of sexual reproduction.

5. **Final Answer**:
- Therefore, the answer to the question "Chlamydomonas shows" is **all the above** (isogamy, anisogamy, and oogamy).

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