Deuteromycetes is called as 'Fungi imperfecti' because of the absence of :

Options

A. Asexual cycle
B. True mycelium
C. Sexual cycle
D. Septate hyphae

Answer

### Step-by-Step Solution

1. **Understanding Deuteromycetes**: Deuteromycetes, also known as Fungi Imperfecti, are a group of fungi characterized by their reproductive methods.

2. **Defining Fungi Imperfecti**: The term "Fungi Imperfecti" refers to fungi that do not have a known sexual reproductive stage. This is in contrast to other fungi that have both sexual and asexual stages.

3. **Identifying the Key Characteristic**: The primary reason Deuteromycetes are classified as Fungi Imperfecti is the absence of a sexual cycle. In these fungi, only the asexual reproduction methods have been observed.

4. **Clarifying Misconceptions**: It is important to note that while Deuteromycetes reproduce asexually, they do not exhibit any form of sexual reproduction, which is why they are termed "imperfect."

5. **Conclusion**: Therefore, Deuteromycetes are called Fungi Imperfecti because they lack a sexual reproductive cycle.

### Final Answer
Deuteromycetes is called 'Fungi Imperfecti' because of the absence of a sexual cycle.

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