In the life cycle of black bread mold, the zygospore :

Options

A. undergoes meiosis and produces zoospores
B. produces spores as a part of asexual reproduction
C. is a thick-walled dormant stage
D. is equivalent to asci and basidia

Explanation

**Step-by-Step Solution:**

1. **Identify the Organism**: The black bread mold is scientifically known as *Rhizopus stolonifer*. It belongs to the group called Zygomycota.

2. **Understand the Life Cycle**: In the life cycle of *Rhizopus stolonifer*, there are two main types of reproduction: asexual and sexual reproduction.

3. **Focus on Sexual Reproduction**: During sexual reproduction, *Rhizopus* produces zygospores. These are formed when two compatible hyphae come together and fuse.

4. **Characteristics of Zygospores**: Zygospores are described as thick-walled and resistant. This thick wall provides protection against environmental stresses, allowing them to survive harsh conditions.

5. **Dormancy of Zygospores**: Zygospores can enter a dormant state, meaning they can remain inactive for several months until conditions become favorable for germination.

6. **Meiosis and Spore Formation**: Once conditions are right, the zygospore undergoes meiosis, leading to the formation of haploid spores. These spores are then dispersed to grow into new individuals.

7. **Conclusion**: In summary, in the life cycle of black bread mold, the zygospore is a thick-walled, dormant stage that plays a crucial role in survival and reproduction.

**Final Answer**: In the life cycle of black bread mold, the zygospore is a thick-walled, dormant stage.

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