The life cycle and ecological significance of major phyla of fungi . Introduction: Fungi are both unicellular and multicellular forms of eukaryotic microbes that are found in the clade of Opsikonta. They are made up of many phyla which though share many common traits of fungi yet differ in terms of physical appearance and life cycle. Differences exist in the formation of gametes and the zygote and alternating haploid and diploid forms exist during the life cycle.

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Chapter 20, Problem 6RQ

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The life cycle and ecological significance of major phyla of fungi.

Introduction:

Fungi are both unicellular and multicellular forms of eukaryotic microbes that are found in the clade of Opsikonta. They are made up of many phyla which though share many common traits of fungi yet differ in terms of physical appearance and life cycle. Differences exist in the formation of gametes and the zygote and alternating haploid and diploid forms exist during the life cycle.

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Using specific examples, distinguish between the life cycles and reproductive structures of the 3 major fungal divisions: Basidomycota, Ascomycota, and Zygomycota.

Describe the life cycle of a member of the Basidiomycota including the following terms/structures: basidiocarp, basidiospore, basidium, clamp connection, dikaryotic, diploid, haploid, karyogamy, meiosis, monokaryotic, plasmogamy, primary mycelium, secondary mycelium, tertiary mycelium. Differentiate between homothallism and heterothallism. Differentiate between unifactorial (bipolar) and bifactorial (tetrapolar) heterothallism.

Place the following events of the SEXUAL lifecycle of a Basidiomycota in chronological order from a spore landing on a substrate through the production of a spore.Basidiospore lands on a substrate Options: plasmogamy, heterokaryotic hyphae/mycelium, meiosis, heterokaryotic fruiting body, karyogamy within a basidium, haploid hyphae