Meiosis occurs in the life cycle of Rhizopus during

Options

A. formation of gametangium
B. germination of zygospore
C. formation of germ sporangium
D. formation of aplanospores

Answer

To solve the question regarding when meiosis occurs in the life cycle of Rhizopus, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Meiosis**:
- Meiosis is a type of cell division known as reduction division because it reduces the chromosome number by half. This process is essential for sexual reproduction.

2. **Life Cycle of Rhizopus**:
- Rhizopus can reproduce both asexually and sexually. Asexual reproduction occurs under favorable conditions, while sexual reproduction occurs under unfavorable conditions.

3. **Formation of Gametangia**:
- In sexual reproduction, the plus and minus strains of hyphae fuse to form structures called progamatangia. These structures then develop into gametangia.

4. **Plasmogamy and Karyogamy**:
- After the formation of gametangia, plasmogamy occurs, leading to the formation of a zygote. This zygote is diploid due to the fusion of gametes.
- Following plasmogamy, karyogamy occurs, resulting in the formation of zygospores.

5. **Germination of Zygospores**:
- The zygospores that are formed then undergo meiosis during their germination. This is the critical step where meiosis occurs in the life cycle of Rhizopus.

6. **Conclusion**:
- Therefore, the answer to the question is that meiosis occurs during the **germination of zygospores** in the life cycle of Rhizopus.

### Final Answer:
Meiosis occurs in the life cycle of Rhizopus during the **germination of zygospores**.

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