Zygospore of Mucor/Rhizopus germinates to form

Options

A. Mycelium
B. Promycelium
C. Hyphae
D. Germ tube.

Answer

To answer the question "Zygospore of Mucor/Rhizopus germinates to form," we need to understand the life cycle and reproductive process of these fungi. Here’s a step-by-step breakdown of the solution:

### Step 1: Understanding Zygospore Formation
- The zygospore is a diploid structure formed by the fusion of two haploid gametes from Mucor or Rhizopus fungi. This process is part of their sexual reproduction.

### Step 2: Germination of Zygospore
- Upon germination, the zygospore undergoes meiosis. This is necessary because the zygospore is diploid, and the fungal body is primarily haploid.

### Step 3: Formation of Hyphae
- After meiosis, the zygospore produces haploid cells that develop into hyphae. Hyphae are the filamentous structures that make up the body of the fungus.

### Step 4: Formation of Promycelium
- Initially, the germination of the zygospore leads to the formation of a structure called promycelium. The promycelium is a short-lived structure that consists of a few hyphal cells.

### Step 5: Development of Mycelium
- The hyphae from the promycelium can then grow and intertwine to form a more extensive network known as mycelium. Mycelium is the main vegetative part of the fungus.

### Conclusion
- Therefore, the correct answer to the question is that the zygospore of Mucor/Rhizopus germinates to form **promycelium**.

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