Which of these fungi does not have a branched and septate mycelium ?

Options

A. Neurospora
B. Albugo
C. Ustilago
D. Colletotrichum

Answer

To determine which fungus does not have a branched and septate mycelium, we need to analyze the characteristics of the fungi mentioned in the options.

### Step-by-Step Solution:

1. **Understanding Mycelium**: Mycelium is the vegetative part of a fungus, consisting of a network of fine white filaments called hyphae. Mycelium can be branched and may or may not have septa (cross-walls).

2. **Identifying the Options**: The options provided are:
- Neurospora (Ascomycetes)
- Albugo (Phycomycetes)
- Ustilago (Basidiomycetes)
- Colletotrichum (Ascomycetes)

3. **Analyzing Each Fungus**:
- **Neurospora**: This fungus is part of the Ascomycetes group and has branched and septate mycelium.
- **Albugo**: This fungus belongs to the Phycomycetes group and is known to be an obligate parasite. Its hyphae are unbranched and lack septa, making it unique among the options.
- **Ustilago**: This is a Basidiomycetes fungus and also has branched and septate mycelium.
- **Colletotrichum**: This fungus is part of the Ascomycetes group and has branched and septate mycelium.

4. **Conclusion**: Based on the analysis, Albugo is the only fungus among the options that does not have a branched and septate mycelium. It has unbranched and aseptate hyphae.

### Final Answer:
**Albugo** does not have a branched and septate mycelium.

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