Zygospores

Definition

Zygospores are thick-walled resting spores formed by the fusion of two similar gametangia in fungi. They are a key characteristic of the phylum Zygomycota, providing a means for survival in adverse conditions.

5 Must Know Facts For Your Next Test

1. Zygospores form through sexual reproduction involving the fusion of haploid cells from two different mating types.
2. They have a thick wall that enables them to withstand harsh environmental conditions.
3. Once favorable conditions return, zygospores germinate to produce sporangia containing haploid spores.
4. Zygospore formation is an important process for genetic recombination and diversity in fungi.
5. Common examples of fungi that produce zygospores include Rhizopus and Mucor species.

Review Questions

• What environmental condition triggers the formation of zygospores?
• Describe the process of zygospore formation in Zygomycota fungi.
• What is the role of zygospores in the life cycle of Rhizopus?

Related terms

Sporangium: A structure where spores are produced and stored.

Gametangia: Specialized structures or organs where gametes are formed.

Zygomycota: A phylum of fungi characterized by forming zygospores during sexual reproduction.