In some algae two entire individual fuse with each other. Such a type of sexual reproduction is called–

Options

A. Isogamy
B. Anisogamy
C. Hologamy
D. Eametangial contact

Answer

To solve the question regarding the type of sexual reproduction in algae where two entire individuals fuse with each other, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Types of Reproduction**:
- Sexual reproduction in algae can occur through different methods. It's important to know the terms associated with these methods.

2. **Identify the Options**:
- The question provides four options:
1. Isogamy
2. Anisogamy
3. Hologamy
4. Gametangeal contact

3. **Analyze Isogamy**:
- Isogamy refers to the fusion of gametes that are of the same size and shape. Since the question specifies the fusion of two entire individuals, this option does not fit.

4. **Analyze Anisogamy**:
- Anisogamy involves the fusion of gametes that are of different sizes. Again, this does not match the description of the fusion of entire individuals.

5. **Analyze Hologamy**:
- Hologamy is the process where two entire individuals fuse together. This matches the description given in the question, making it a strong candidate for the correct answer.

6. **Analyze Gametangeal Contact**:
- Gametangeal contact refers to the fusion of male and female gametangia, which does not involve the fusion of entire individuals. Therefore, this option is also incorrect.

7. **Conclusion**:
- Based on the analysis, the correct answer is **Hologamy**, as it is the only option that describes the fusion of two entire individuals.

### Final Answer:
The type of sexual reproduction in some algae where two entire individuals fuse with each other is called **Hologamy**.

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