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Exam 1: Fungi
Fungi
77
Biology
Undergraduate 1
02/18/2013

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Term
Algal layer
Definition
The layer of photosynthetic algae that lies right below the outer cortex of a lichen.
Term
Antheridia
Definition
The male reproductive structure of a fungus; contains fertile sperm tissue and sterile cells.
Term
Apothecia
Definition
The major cup-like reproductive structure of an ascomycete.
Term
Arbuscular mycorrhizal fungi
Definition
Endomycorrhizal fungi; create a sort of "tree" like structure inside of the cell wall to increase surface area; does not permeate the nuclear membrane of the host cell.
Term
Arbuscules
Definition
The "trees" of arbuscular mycorrhizal fungi. Increase surface area.
Term
Asci
Definition
The spore-bearing cell of an ascomycete; usually houses eight ascospores (first meiotic cell division followed by a mitotic cell division).
Term
Ascocarp
Definition
The fruiting body of an ascomycete; contain asci. Include cheistothecium (completely enclosed), apothecium (cup-shaped, most important), and perithecium (flash shaped with a small opening).
Term
Ascogonium
Definition
The female reproductive structure of an ascomycete; fuses with antheridium through plasmogomy to create an ascocarp. The asci of the ascocarp are dikaryotic until the time for disperal.
Term
Ascomycota
Definition
A division of fungi that are colloquially called "sac fungi;" there are about 65,000 species.
Term
Aseptate
Definition
Coenocytic fungi that do not contain septa (divisions) in their cell wall. Their hyphae are one continuous cell that divides but does not undergo cytokinesis.
Term
Asexual
Definition
The reproduction method that does not utilize fertilization. Typical of most fungi.
Term
Basidia
Definition
The fruiting body of Basidiomycota; typically dikaryotic. Karyogamy creates diploid nuclei that undergo meiosis to form 4 gametes that are then excreted as basidiospores.
Term
Basidiocarp
Definition
The container of basidia; a dikaryotic fruiting body that excretes basidiospores.
Term
Basidiomycota
Definition
A division of fungi that are colloquially called "club fungi;" about 30,000 species included.
Term
Bird's nest fungi
Definition
A member of Basidiomycota (club fungi); create a cup filled with peridia (fruiting bodies) that are dispersed via water.
Term
Cap
Definition
A common feature of Basidiomycota; can contain teeth, gills, or polypores.
Term
Chitin
Definition
The primary makeup of fungal cell walls.
Term
Chytridiomycota
Definition
A paraphyletic division that contains about 1000 species; mainly aquatic, motile, may be inside of animal guts.
Term
Chytrids
Definition
The types of fungi contained within Division Chytridiomycota.
Term
Club fungi
Definition
The types of fungi that are contained within Basidiomycota.
Term
Coenocytic
Definition
Another name for aseptate; lacking dividing septate between hyphae cells.
Term
Conidia
Definition
The asexual spores of Ascomycetes that form on sporangium. These are mitospores; they form via mitosis. This is the source of yeast budding.
Term
Conjugation
Definition
The sexual reproduction of Zygomycota; two hyphae called gametangia fuse to form a dikaryote zygosporangium. This then undergoes karyogamy and finally meiosis to create haploid spores that disperse, undergo mitosis, and create new hyphae.
Term
Crustose
Definition
A form of lichen; "crust-like" attached to substrate along lower surface. There is no clear lower cortex.
Term
Dikaryotic
Definition
A cell that contains two separate haploid nuclei; must undergo karyogamy to create a true zygote. These are typically fruiting bodies (basidia, asci, zygosporangia) that are not yet ready to release spores.
Term
Earthstar
Definition
A type of club fungus that unfolds its "rays" when it rains to release spores, but otherwise dries and closes up.
Term
Ectomycorrhizas
Definition
A mycorrhizal fungus that stays outside of the root; contains Basidiomycota and Ascomycota. Mantles and hartig nets. Temperate, highly generalized fungi, about 5000 species.
Term
Endomycorrhizas
Definition
A type of mycorrhiza that stays inside of root cells; contains Glomeromycota. Arbuscules reach inside of cell walls while vesicles inside of cell walls act as fungal storage organs.
Term
Ergot
Definition
A form of Ascomycota that infects open fruiting bodies such as wheat; often causes ergotism in humans and animals that may have been the cause of witch hunts and such.
Term
Extracellular digestion
Definition
A method of feeding in which the fungus excretes enzymes out of its cell membrane onto its food and absorbs the digested nutrition.
Term
Filamentous
Definition
The sort of green algae that is contained within lichens.
Term
Foliose
Definition
A form of lichen that is loosely connected to the substrate; "leaf like". Rhizines attach to substrate and a distinct lower cortex is visible.
Term
Fruticose
Definition
A form of lichen that is loosely hung in leaves or like mini-shrubs; the algal layer has no top or bottom, and no upper or lower cortex is distinguishable.
Term
Fungus
Definition
What you are studying right now. <_<
Chitin cell walls, chemoheterotrophic (except for lichens), and stuff.
Term
Gametangia
Definition
The fertile body that is separate from the hyphae; two gametangia from a Zygomycota fuse together to form a dikaryote zygosporangia.
Term
Gills
Definition
One form of surface-area increasing strategy of Basidiomycota to release more spores from their basidiocarp.
Term
Glomeromycota
Definition
Arbuscular fungi; only mycorrhizal fungi.
Term
Hartig net
Definition
The site of nutrient exchange between an ectomycorrhizal fungus and its host root; a bunch of hyphae inside of an empty root space.
Term
Haustoria
Definition
Specialized parasitic fungal hyphae that penetrate the cell wall and tissues but not the actual cell.
Term
Heterokaryotic
Definition
Multiple nuclei; usually the fruiting bodies are dikaryotic before they are able to release their spores.
Term
Heterotrophic
Definition
Using organic substances obtained as a source of carbon; most fungi are heterotrophic.
Term
Hyphae
Definition
The "roots" or actual body of a fungus.
Term
Karyogamy
Definition
The fusion of nuclei to make a heterokaryotic cell into a diploid zygote.
Term
Lichen
Definition
A type of fungus that utilizes algae to undergo photosynthesis and obtain sugars as a source of carbon.
Term
Lower cortex
Definition
The lower hyphae layer of foliose fungi; houses rhizines that attach to the substrate.
Term
Mantle
Definition
The outer layer of fungal tissue around a root that is a characteristic of ectomycorrhizal fungi.
Term
Medulla
Definition
Space inbetween lower and middle cortex.
Term
Morels
Definition
A type of Ascomycete; edible.
Term
Mycelium
Definition
A term that describes the mass of hyphae of a fungus.
Term
Mycorrhizas
Definition
Mutualistic endosymbionts that live inside of root tips that exchange surface area and nutrient absorption the plant uses for sugar the plant produces.
Term
Plasmogamy
Definition
The fusion of cytoplasm in a Zygomycete that forms a dikaryotic zygosporangia.
Term
Pores
Definition
A method club fungi use to increase surface area on their caps in order to release as many spores as possible.
Term
Puffball
Definition
A type of club fungus that releases spores when shock forces spores out of their fruiting bodies.
Term
Resting spore
Definition
Really thick-walled mature zygosporangium.
Term
Rhizines
Definition
Attachment points between the lower cortex and the substrate of a lichen.
Term
Rusts
Definition
Basidiomycota that are destructive plant parasites.
Term
Sac fungi
Definition
The colloquial name for Ascomycota.
Term
Saprobes
Definition
A decomposer.
Term
Septate
Definition
Containing dividing cell walls between each cell of the hyphae.
Term
Shelf fungi
Definition
A type of Basidiomycota.
Term
Smuts
Definition
A destructive plant parasite, part of Basidiomycota.
Term
Soredia
Definition
The asexual reproductive structure of lichen; fungal hyphae wrapped around algal cells erupting from a piece of lichen.
Term
Sporangia
Definition
The spore-producing body of a fungus; asexual reproduction.
Term
Sterigmata
Definition
A long body that connects a basidium to a spore; think of stigma in terms of structure.
Term
Sterile hyphae
Definition
A hyphae that is usually contained near a fertile hyphae inside of an ascocarp.
Term
Stipe
Definition
The stem of a club fungus.
Term
Thallus
Definition
The vegetative body of a lichen; other word for mycelium. More used for algae.
Term
Truffles
Definition
Delectable Ascomycota; very valuable.
Term
Uniflagellated
Definition
Having one flagellum. Characteristic of Chytridiomycota zoospores.
Term
Upper cortex
Definition
The upper layer of a lichen; not distinct in fruticose lichen. Protects the algal layer.
Term
Vesicles
Definition
Storage units created by extomycorrhiza.
Term
Volva
Definition
Cup or bulb at base of a club fungus.
Term
Yeast
Definition
Unicellular Ascomycota, reproduce by budding.
Term
Zoospore
Definition
The motile asexual reproductive state of a fungus. Characteristic of Chytridiomycota.
Term
Zygomycota
Definition
A division of fungus characterized by the sexual reproductive method of conjugation (positive and negative hyphae form a zygosporangia that then undergoes karyogamy, creating a sporangia that can reproduce asexually or sexually).
Term
Zygote fungi
Definition
Colloquial name for Zygomycota.
Term
Zygosporangium
Definition
The dikaryote (early) or diploid (mature) fertilized body of a Zygomycota.
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