How many frem the following belong to deuteromycetes?
Albugo, Puccinia, Colletotrichum, Ustilago, Aspergillus, Saccharomyces, Rhizopus, Alternaria, Neurospora, Agaricus

Options

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

Answer

To determine how many of the listed organisms belong to the group Deuteromycetes (also known as imperfect fungi), we will analyze each organism one by one.

### Step-by-Step Solution:

1. **Identify the Group**: Deuteromycetes are fungi that do not have a known sexual reproductive stage. They are often referred to as "imperfect fungi."

2. **List the Organisms**: The organisms provided in the question are:
- Albugo
- Puccinia
- Colletotrichum
- Ustilago
- Aspergillus
- Saccharomyces
- Rhizopus
- Alternaria
- Neurospora
- Agaricus

3. **Classify Each Organism**:
- **Albugo**: Belongs to Phycomycetes (not Deuteromycetes).
- **Puccinia**: Belongs to Basidiomycetes (not Deuteromycetes).
- **Colletotrichum**: Belongs to Deuteromycetes (is a member).
- **Ustilago**: Belongs to Basidiomycetes (not Deuteromycetes).
- **Aspergillus**: Belongs to Ascomycetes (not Deuteromycetes).
- **Saccharomyces**: Belongs to Ascomycetes (not Deuteromycetes).
- **Rhizopus**: Belongs to Phycomycetes (not Deuteromycetes).
- **Alternaria**: Belongs to Deuteromycetes (is a member).
- **Neurospora**: Belongs to Ascomycetes (not Deuteromycetes).
- **Agaricus**: Belongs to Basidiomycetes (not Deuteromycetes).

4. **Count the Deuteromycetes**: From the classification:
- Colletotrichum (1)
- Alternaria (2)

Therefore, there are **2 organisms** that belong to Deuteromycetes.

### Final Answer:
**2 organisms belong to Deuteromycetes.**

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