The class of fungi in which asexual reproduction is generally absent

Options

A. Phycomycetes
B. Ascomycetes
C. Basidiomycetes
D. Deuteromycetes

Answer

To determine the class of fungi in which asexual reproduction is generally absent, we can follow these steps:

### Step 1: Understand the Types of Fungi
Fungi are classified into various classes based on their reproductive methods. The main classes include:
- Phycomycetes
- Ascomycetes
- Basidiomycetes
- Deuteromycetes

### Step 2: Analyze Each Class for Asexual Reproduction
- **Phycomycetes**: This class typically reproduces asexually through spores.
- **Ascomycetes**: This class also reproduces asexually, often through the formation of conidia.
- **Basidiomycetes**: This class can reproduce asexually, though they are more known for sexual reproduction.
- **Deuteromycetes**: This class is unique because it is known as the "imperfect fungi," where sexual reproduction has not been observed. They reproduce only asexually through conidia.

### Step 3: Identify the Class Without Asexual Reproduction
From the analysis, we see that:
- Phycomycetes, Ascomycetes, and Basidiomycetes all have asexual reproduction.
- Deuteromycetes are characterized by the absence of sexual reproduction, but they do have asexual reproduction.

### Step 4: Conclusion
Upon reviewing the classes, it is clear that the class of fungi where asexual reproduction is generally absent is **Deuteromycetes**. However, it is important to note that Deuteromycetes are primarily known for their asexual reproduction, which can lead to confusion. The question may be interpreted as looking for a class that does not have a defined sexual reproduction cycle.

### Final Answer
The class of fungi in which asexual reproduction is generally absent is **Deuteromycetes**.

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