Question

How are the reproductive cycles of a fungus and a pteridophyte similar?

Fungi of the phylum Basidiomycota form mycorrhizal associations with orchids, a type of flowering plant. How do these associations benefit both the fungi and the orchids?

Answer 1

Fungus and a pteridophyte organisms produce haploid spores and exhibit diploid and haploid stages.

What is haploid stages?

• After mitosis, diploid cells are created that have the same genetic makeup as their parent cell.
• After meiosis, due to genetic cross-over, the haploid cells are not genetically identical to their parents.
• The sporophytic stage of the lifecycle is the diploid stage.
• The gametophytic stage of the lifecycle is the haploid stage.
• A diploid zygote is created when gametes produced by the multicellular haploid stage (the gametophyte) join together during mitosis.
• The zygote grows into a multicellular, mature diploid organism called a sporophyte, which uses meiosis to produce haploid spores.
• Any member of the eukaryotic group of organisms, which also includes the more well-known mushrooms and microbes like yeast and mold, is referred to as a fungus.

Learn more about haploid stage here:

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