Which one of the following belongs to the same class?

Options

A. Mucor , Alternaria and Yeast
B. Morchella , Truffles and Saccharomyces
C. Agaricus , Rhizopus and Aspergillus
D. Rhizopus,Colletotrichum and Yeast

Answer

To solve the question of which group of organisms belongs to the same class, we need to analyze each option based on the classification of fungi. Fungi are primarily classified into four classes:

1. **Phycomycetes** (e.g., Rhizopus)
2. **Ascomycetes** (e.g., Saccharomyces, Morchella)
3. **Basidiomycetes** (e.g., Agaricus)
4. **Deuteromycetes** (also known as imperfect fungi, e.g., Colicotrichum)

Now, let's evaluate each option provided in the question:

1. **Mucus, Alternaria and Yeast**:
- Mucus (likely a typo for Mucor) belongs to **Phycomycetes**.
- Yeast (like Saccharomyces) belongs to **Ascomycetes**.
- Alternaria is also a member of **Deuteromycetes**.
- **Conclusion**: They belong to different classes.

2. **Morchella, Truffles and Saccharomyces**:
- Morchella belongs to **Ascomycetes**.
- Truffles also belong to **Ascomycetes**.
- Saccharomyces belongs to **Ascomycetes**.
- **Conclusion**: All belong to the **Ascomycetes** class.

3. **Agaricus, Rhizopus and Aspergillus**:
- Agaricus belongs to **Basidiomycetes**.
- Rhizopus belongs to **Phycomycetes**.
- Aspergillus belongs to **Deuteromycetes**.
- **Conclusion**: They belong to different classes.

4. **Rhizopus, Colicotrichum, Trichum**:
- Rhizopus belongs to **Phycomycetes**.
- Colicotrichum belongs to **Deuteromycetes**.
- Trichum (likely a typo for Trichoderma) belongs to **Deuteromycetes**.
- **Conclusion**: They belong to different classes.

5. **Colicotrichum, Trichum and Yeast**:
- Colicotrichum belongs to **Deuteromycetes**.
- Trichum (Trichoderma) belongs to **Deuteromycetes**.
- Yeast (Saccharomyces) belongs to **Ascomycetes**.
- **Conclusion**: They belong to different classes.

Based on the analysis, the correct answer is **Morchella, Truffles and Saccharomyces**, as all of them belong to the **Ascomycetes** class.