Asexual spores formed by Colletotrichum falcatum, Sphaelotheca sorghi and Rhizopus stolonifer are

Options

A. Many celled
B. One celled
C. Pyriform
D. Rod-shaped.

Answer

To answer the question regarding the asexual spores formed by Colletotrichum falcatum, Sphaelotheca sorghi, and Rhizopus stolonifer, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Fungi**:
- The question mentions three fungi: Colletotrichum falcatum, Sphaelotheca sorghi, and Rhizopus stolonifer.

2. **Determine the Type of Spores for Each Fungus**:
- **Colletotrichum falcatum**: This fungus belongs to the division Ascomycota and produces asexual spores known as **conidia**. These spores are unicellular and typically falcate (sickle-shaped).
- **Sphaelotheca sorghi**: This fungus belongs to the division Basidiomycota and also produces **conidia**. These spores are unicellular and are generally oval-shaped.
- **Rhizopus stolonifer**: This fungus belongs to the division Zygomycota and produces asexual spores called **sporangiospores**. These spores are also unicellular and oval in shape.

3. **Summarize the Characteristics of the Spores**:
- All three fungi produce unicellular spores.
- Colletotrichum falcatum produces conidia (falcate shape).
- Sphaelotheca sorghi produces conidia (oval shape).
- Rhizopus stolonifer produces sporangiospores (oval shape).

4. **Evaluate the Options**:
- The question likely provides multiple-choice options regarding the characteristics of these spores. Based on our findings:
- **Many-celled**: Incorrect, as all spores are unicellular.
- **One-celled**: Correct, as all spores are unicellular.
- **Pyriform**: Incorrect, as this shape does not apply to all spores.
- **Rod-shaped**: Incorrect, as this shape does not apply to any of the spores.

5. **Conclusion**:
- The correct answer is that the asexual spores formed by Colletotrichum falcatum, Sphaelotheca sorghi, and Rhizopus stolonifer are **one-celled**.

### Final Answer:
The asexual spores formed by Colletotrichum falcatum, Sphaelotheca sorghi, and Rhizopus stolonifer are **one-celled**.