No sexual reproduction occurs in the algal forms belonging to :-

Options

A. Chlorophyceae
B. Myxophyceae
C. Rhodophyceae
D. Phaeophyceae

Answer

To solve the question "No sexual reproduction occurs in the algal forms belonging to:", we will analyze each option provided and determine which algal group does not exhibit sexual reproduction.

### Step-by-Step Solution:

1. **Understand the Question**:
- The question asks which algal forms do not undergo sexual reproduction.

2. **Evaluate Option 1: Chlorophyce**:
- Chlorophyce (green algae) is known to reproduce sexually through various methods including isogamy, anisogamy, and oogamy.
- **Conclusion**: This option is incorrect.

3. **Evaluate Option 2: Myxophyce**:
- Myxophyce (also known as Cyanophyce or blue-green algae) primarily reproduces asexually through methods like binary fission and does not have a sexual reproduction phase.
- **Conclusion**: This option is correct.

4. **Evaluate Option 3: Rhodophyce**:
- Rhodophyce (red algae) is known to have sexual reproduction, which can occur through various complex life cycles.
- **Conclusion**: This option is incorrect.

5. **Evaluate Option 4: Phaeophyce**:
- Phaeophyce (brown algae) can reproduce both sexually and asexually, depending on the species and environmental conditions.
- **Conclusion**: This option is incorrect.

6. **Final Answer**:
- Based on the evaluations, the correct answer is **Option 2: Myxophyce**.