BIOL 2010 Quiz: Fungal Kingdom
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• Is a mild pathogen, exists in soil. Has chitin. Will invade into the plant cells and
their rhizoid will suck it out.
The three main groups of the fungi kingdom are Zygomycota, Ascomycota
and Basidiomycota. Differentiates in terms of their spores.
(endomycorrhizae) Glomeromycota are the symbionts.
They are all pathogens but for the most part are decomposers, are heterotrophs
but feeds on the dead (Saprobes). Are important in the terms of CO2 cycling in
the atmosphere and ecological importance. Decomposes by secreting enzymes
to the outside of the cell. [Filamentous fungal colony] Breaks down anything,
protein, collagen etc. This is due to the exoenzymes outside of the cell. As you
get broken down, the nutrients will be taken in through the mycelial structure
and through the membranes and will be converted to starch or glucose that is
required for the fungi to survive. Occurs with all three groups that exist within
the fungal kingdom.
• Known due to its zygospore. An Example of this would be black bread mold
(Rhizopus). It grows through the bread and as it collects the nutrients
form the bread it forms spores.
• The life cycle that occurs, when zygomycota is growing through some
substrate and decomposing, it will form Hyphae and will form 2 mating
types. It will grow in between to meet up and fuse. Under ordinary
circumstances, the genetic states are haploid (1n). When the fusion
process occurs which is known as cytogamy (formation of a cytoplasm)
you’ll get a zygote (2n) diploid form which then undergoes the formation
of the complete sporangium structure known as the zygote sporangium.
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