A unicellular ascomycetes member is

Options

A. Phytophthora
B. Saccharomyces
C. Sclerospora
D. Rhizopus

Answer

To determine a unicellular ascomycete member from the given options, follow these steps:

### Step-by-Step Solution:

1. **Understand Ascomycetes**: Ascomycetes, also known as sac fungi, are a group of fungi characterized by their production of spores in a specialized sac-like structure called an ascus.

2. **Identify the Characteristics**: Ascomycetes can be unicellular or multicellular. Unicellular members are typically yeast-like organisms.

3. **Review the Options**: The question provides several options to choose from. Let's analyze them:
- **Option A: Phytophthora** - This is not an ascomycete; it belongs to the Oomycetes group.
- **Option B: Saccharomyces** - This is a well-known unicellular fungus, commonly referred to as yeast, and it is indeed an ascomycete.
- **Option C: Clerospora** - This is also not an ascomycete; it belongs to a different group of fungi.
- **Option D: Rhizopus** - This is a zygomycete, not an ascomycete.

4. **Select the Correct Answer**: Based on the analysis, the only unicellular ascomycete from the options provided is **Saccharomyces**.

### Final Answer:
The unicellular ascomycete member is **Saccharomyces** (Option B).

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