The fusion of male and female gamete in Chlamydomonas is called

Options

A. Syngamy
B. Oogamy
C. Isogamy
D. Anisogamy

Answer

To solve the question, "The fusion of male and female gamete in Chlamydomonas is called," we will analyze the options provided and determine the correct answer step by step.

### Step-by-Step Solution:

1. **Understanding Gamete Fusion**:
- The question is asking about the type of fusion that occurs between male and female gametes in Chlamydomonas.

2. **Identifying the Types of Gamete Fusion**:
- The options given are:
- A) Syngamy
- B) Oogamy
- C) Isogamy
- D) Anisogamy

3. **Defining Each Type**:
- **Syngamy**: This term refers to the general process of gamete fusion, resulting in the formation of a zygote. It is not specific to the size or type of gametes.
- **Oogamy**: This is a type of anisogamy where there is a large female gamete (egg) and a smaller male gamete (sperm). This is typically seen in organisms like some algae.
- **Isogamy**: This refers to the fusion of gametes that are similar in size and shape. In isogamous organisms, there is no differentiation between male and female gametes.
- **Anisogamy**: This involves the fusion of gametes that are dissimilar in size or morphology. Chlamydomonas exhibits anisogamy, where the male and female gametes differ in size.

4. **Analyzing Chlamydomonas**:
- Chlamydomonas is a type of green algae that reproduces sexually through anisogamy. The male gamete is smaller than the female gamete.

5. **Selecting the Correct Answer**:
- Given that Chlamydomonas exhibits anisogamy, the correct answer to the question is **D) Anisogamy**.

### Final Answer:
The fusion of male and female gamete in Chlamydomonas is called **Anisogamy**.