Fusion of two gametes which are dissinilar in size is tarmed as

Options

A. oogamy
B. isogamy
C. anisogamy
D. both a and c

Explanation

To solve the question regarding the fusion of two gametes that are dissimilar in size, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Terminology**:
- We need to identify the terms related to the fusion of gametes. The key terms to focus on are Oogamy, Isogamy, and Anisogamy.

2. **Analyze the Options**:
- **Oogamy**: This refers to a type of sexual reproduction where the female gamete (egg) is larger and non-motile, while the male gamete (sperm) is smaller and motile. This indicates a difference in size.
- **Isogamy**: This term describes the fusion of gametes that are similar in size and shape. Therefore, it does not fit our requirement of dissimilar gametes.
- **Anisogamy**: This refers to the fusion of gametes that are dissimilar in size. This is the key term we are looking for.

3. **Evaluate the Correct Answer**:
- Since we are looking for the fusion of gametes that are dissimilar in size, the correct term is **Anisogamy**.

4. **Conclusion**:
- The answer to the question is **Anisogamy**.

### Final Answer:
The fusion of two gametes which are dissimilar in size is termed as **Anisogamy**.

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