How many of the following fungi belong to the group 'Sac-Fungi'?
Ustilago, Aspergillus, Neurospora, Trichoderma, Albugo, Claviceps, Saccharomyces, Colletrotrichum

Options

A. Two
B. Four
C. Five
D. Three

Answer

To determine how many of the listed fungi belong to the group 'Sac-Fungi' (Ascomycetes), we will analyze each fungus mentioned in the question:

1. **Ustilago**: This is a type of smut fungus and belongs to the Basidiomycetes class, not Ascomycetes.

2. **Aspergillus**: This fungus is a member of the Ascomycetes class (Sac-Fungi).

3. **Neurospora**: This is also a member of the Ascomycetes class and is widely used in genetic studies.

4. **Trichoderma**: This fungus belongs to the Deuteromycetes class, which is also known as imperfect fungi.

5. **Albugo**: This is a parasitic fungus that belongs to the Phycomycetes class.

6. **Claviceps**: This fungus is a member of the Ascomycetes class.

7. **Saccharomyces**: This is a well-known yeast and is also classified under Ascomycetes.

8. **Colletotrichum**: This fungus belongs to the Deuteromycetes class.

Now, let's summarize the classifications:

- **Ascomycetes (Sac-Fungi)**: Aspergillus, Neurospora, Claviceps, Saccharomyces
- **Basidiomycetes**: Ustilago
- **Deuteromycetes**: Trichoderma, Colletotrichum
- **Phycomycetes**: Albugo

From the analysis, the fungi that belong to the group 'Sac-Fungi' are:
- Aspergillus
- Neurospora
- Claviceps
- Saccharomyces

Thus, there are **4 fungi** from the list that belong to the group 'Sac-Fungi'.

**Final Answer**: 4