Deuteromycetes are called Imperfect fungi' as:

Options

A. They have no cell wall
B. No mycelium is found
C. No sexual reproduction is found
D. No asexual reproduction is found

Answer

**Step-by-Step Solution:**

1. **Understanding Deuteromycetes**: Deuteromycetes, also known as "Imperfect fungi," are a group of fungi that do not have a known sexual reproductive stage. This is a key characteristic that differentiates them from other fungal groups.

2. **Analyzing the Statements**:
- **Statement A**: "They have no cell wall." This statement is incorrect. Deuteromycetes do possess a cell wall, which is a typical feature of fungi.
- **Statement B**: "No mycelium is found." This statement is also incorrect. Members of Deuteromycetes have mycelium, which is made up of septate and branched hyphae.
- **Statement C**: "No sexual reproduction is found." This statement is correct. Deuteromycetes reproduce asexually through spores called conidia and do not exhibit sexual reproduction.
- **Statement D**: "No asexual reproduction is found." This statement is incorrect. Deuteromycetes are known for their asexual reproduction through conidia.

3. **Conclusion**: The correct reason why Deuteromycetes are called "Imperfect fungi" is because they do not undergo sexual reproduction (Statement C).

4. **Examples**: Common examples of Deuteromycetes include Alternaria and Trichoderma. If any member of this group is later found to have a sexual reproductive stage, it may be reclassified into Ascomycetes or Basidiomycetes.

**Final Answer**: Deuteromycetes are called "Imperfect fungi" because they do not undergo sexual reproduction.

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