Kingdom Fungi

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Biology

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20 Terms

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Main characteristics of Fungi
Mostly multicellular
Heterotrophic
mostly terrestrial
Mostly decomposers
cell wall made from chitin
reproduce sexually using spores and asexually
lack true roots, stems and leaves
some are edible while others are poisonous
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Hyphae
elongated cells that form a branching filamentous structure
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Septate hypha
hypha separated by cell walls
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Nonseptate hypha
hyphae not divided into individual cells
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Mycelium
multiple hyphae forming a branching network of filaments
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Ascomycota
sexual spores formed in sac-like "ascus"
important for fermentation and food
very diverse
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Basidiomycota
produces mushroom-cap
mostly decomposers
includes puffballs, and bracket fungi
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Zygomycota
mostly soil fungi
includes bread and fruit moulds
multinucleate hyphae
non-septate
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Chytridiomycota
mostly decomposers
some unicellular some multicellular
some have swimming spores
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Glomeromycota
all form symbiotic relationships with plant roots
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Extracellular Digestion
Excretion of digestive enzymes
digestive enzymes degrade substances
digested good absorbed by hyphae
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Lichen
Partnership between fungus and cyanobacteria or green algae
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Mycorrhizae
partnership between fungus and plant roots
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Reproduction of fungi
using spores
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Spores
adaptation to life on land
new species will disperse to new locations
contains a reproductive cell that forms
non-motile
dispersed by wind
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sexual reproduction
used when environmental conditions are poor
some fungi show dimorphism which is the ability of certain fungi to switch between unicellular yeast and multicellular filamentous growth forms in response to changing environmental cues.
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Fragmentation
part of the mycelium becomes separated and begins a life on its own
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Budding
a small cell forms and gets pinched off as it grows to full size
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asexual spores
production of spores by a single mycelium
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Spores are made of:
Dehydrated cytoplasm
protective coar
haploid cell
wind, animals, water and insects spread spores