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28 Cards in this Set
- Front
- Back
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Do fungi produce spores?
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yes!
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Are fungi heterotrophic or autotrophic?
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heterotrophic
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Are fungio unicellular or multicellular?
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both!
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What is different between the way that plants and fungi store food?
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plants store starch
fungi store glycogen |
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What do fungi use primarily in their cell walls?
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chitin (NOT cellulose)
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Two ways asexual reproduction occurs in fungi?
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1. fragmentation of the mycelium
2. production of spores within sporangia |
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What is the "imperfect stage"?
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it is what asexual repro. is referred to in fungi.
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What is the "perfect stage" also known as? What does it involve?
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sexual repro. It involves gametes produced within gametangia.
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What is the sexual life cycle for all fungi known as?
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zygotic meiosis.
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What does zygotic meiosis mean?
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the vegetative body is haploid and that the zygote undergoes meiosis
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What two stages is syngamy separated into?
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plasmogamy (fusion of cytoplasm) and karyogamy (fusion of nuclei)
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What does dikaryotic mean?
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fungal hyphae containing two nuclei
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What are the four major groups of fungi?
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Zygomycota
Ascomycota Basidiomycota Imperfect Fungi |
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Zygomycota
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(bread mold) - fusion of hyphae leads directly to the formation of a zygote
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Ascomycota
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(truffels) hyphal fusion leads to dikaryotic hyphae that form a part of a fruiting body within which zygotes are formed
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Basidiomycota
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(mushrooms and toadstools) dikaryotic hyphae form all of the fruiting structures within which zygotes are formed in club-like structures.
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Imperfect Fungi
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only reproduce asexually
(lichens) |
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What is a hymenium? What does is consist of?
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it is an inner concave surface, a fertile region. Consists of a layer of asci plus sterile hyphae.
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How do Ascomycetes reproduce asexually?
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By forming conidia (asexual spores) on conidiophores OR by budding as in yeasts
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What do all members of Basidiomycota produce?
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basidia (club-shaped reproductive structures)
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What is produced on the basidia?
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Basidiospores (resulting from meiosis)
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What is the characteristic structure of asomycetes? What is produced there?
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the ascus or sac.
the ascospores (from meiosis) |
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How do Basidiomate arise?
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entirely from dikaryotic (n + n) hyphae
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What does the vegetative body of lichens consist of?
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the photobiont and the mycobiont
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What does the photobiont do for lichens?
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it provides nutrients through photosynthesis
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What does the mycobiont do for lichens?
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it provides shelter and attachment allowing the partnership to exist in harsh conditions (like rock surfaces)
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What are the two relationships possible between algae and fungus?
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mutualistic (both get benefits) and obligate parasitic (fungus can't grow without alga)
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What are the three types of lichens?
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1. crustose (crustlike - looks like rock, bark, etc)
2. Foliose (leaflike) 3. Fruticose (shrublike) |
