Sexual reproduction is found in all except-

Options

A. Deuteromycetes
B. Ascomycetes
C. Phycomycetes
D. Basidiomycetes

Answer

To answer the question "Sexual reproduction is found in all except-", we will analyze the options provided and identify which group does not exhibit sexual reproduction.

### Step-by-Step Solution:

1. **Understanding the Options**:
- Option 1: Deuteromycetes
- Option 2: Ascomycetes
- Option 3: Basidiomycetes
- Option 4: Zygomycetes

2. **Defining Each Group**:
- **Deuteromycetes**: Also known as "imperfect fungi," this group does not have a known sexual reproduction cycle. They reproduce asexually through conidia (asexual spores).
- **Ascomycetes**: Known as sac fungi, they reproduce sexually by forming ascospores in a sac-like structure called an ascus.
- **Basidiomycetes**: Known as club fungi, they reproduce sexually by forming basidiospores on a club-shaped structure called a basidium.
- **Zygomycetes**: These fungi reproduce sexually by forming zygospores during the sexual phase of their life cycle.

3. **Identifying the Exception**:
- From the definitions, it is clear that Deuteromycetes do not engage in sexual reproduction, while Ascomycetes, Basidiomycetes, and Zygomycetes all do.

4. **Conclusion**:
- Therefore, the correct answer to the question is **Option 1: Deuteromycetes**.

### Final Answer:
Sexual reproduction is found in all except **Deuteromycetes**.

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