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Fungus
Test on Fungus
40
Plant Sciences
Undergraduate 2
10/19/2015

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Cards

Term
What is in Phylum Chytridiomycota
Definition
The Chytrids
Term
What is in Phylum Deuteromycota
Definition
The Deuteromycetes (Imperfect Fungi)
Term
What is in Phylum Zygomycota?
Definition
True Fungus
Term
What is in Phylum Ascomycot?
Definition
The Ascomycetes (Sac Fungi)
Term
What is in Phylum Basidiomycota?
Definition
The Basidiomycetes(Club Fungi)
Term
What are Phylum Chytridiomycota (The chytrids)?
Definition
Simple, one celled organisms, some are parasitic, some are saprobic.
Term
What does Saprobic mean?
Definition
Feeds on non-living organic matter.
Term
What is Hyphae?
Definition
It is individual threads, similar to roots.
Term
What is Mycelium?
Definition
A mass of Hyphae.
Term
What is true of all true fungi?
Definition
All true fungi are filamentous or unicellular
heterotrophs, most of which absorb their food in
solution through cell walls.
Term
What can be found in Fungi cell walls?
Definition
Chitin
Term
Most fungi are filamentous. Name some exceptions.
Definition
Some chytrids and all yeasts
Term
What are the most primitive fungi?
Definition
The chytrids
Term
How does phylum Chytridiomycota reproduce?
Definition
Many reproduce only asexually through the production
of zoospores within a spherical cell.

Sexual reproduction by fusion of haploid gametes
Term
What phylum are black bread molds?
Definition
Zygomycota
Term
What is true of Zygomycota Hyphae?
Definition
Numerous haploid nuclei, with no cell walls between them
Term
How do Zygomycota reproduce asexually?
Definition
Asexually- Sporangiophores grow upright and produce sporangia at the tips, forming black spores.
Term
How do Zygomycota reproduce sexually?
Definition
Progmentangia on hyphae of different mating strains become gametangia. These gametangia merge and multinucleate zygote when nuclei of two strains fuse in pairs.
Thick wall forms around = zygosporangium containing numerous diploid nuclei.Meiosis forms spores in sporangia on sporangiophores. I think these are made up words.
Term
What is zygomycota used for?
Definition
Food sources
–Tempeh in Indonesia
-Fermented soybeans
Industrial uses
–Pharmaceuticals
-Manufacture of birth control pills and
anesthetics
–Pigments
-Yellow pigment for coloring margarine
Term
Name a few members of phylum Ascomycota.
Definition
Truffles, yeasts, powdery mildews, ergot, cordyceps
Term
How are most Ascomycota mycleium produced?
Definition
Hyphae partitioned into individual cylindrical cells.
Term
How are most Ascomycota mycleium produced?
Definition
Hyphae partitioned into individual cylindrical cells.
Term
How does phylum Ascomycota reproduce asexually?
Definition
Single or chains of conidia produced at the tips of hyphae called conidiophores, or budding in yeasts
Term
How do Ascomycota reproduce sexually?
Definition
Antheridium (male) and ascogonium (female) from two hyphae connect.
•Male nuclei migrate into ascogonium where nuclei pair, but do not unite.
•Hyphae, whose cells contain one male and one female nucleus, grow from ascogonium.
•Ascoma forms, with sacs called asci (singular: ascus).
–The two nuclei in each ascus unite to form zygotes that undergo meiosis.
–Resulting cells divide by mitosis forming a row of eight ascospores in each ascus.
Term
What is in phylum Basidiomycota?
Definition
Mushrooms, toadstools, puffballs, shelf fungi, rusts, smuts, jelly fungi
Term
What is true of Basidiomycota Hyphae?
Definition
It is divided into individual cells
Term
How do Basidiomycota reproduce?
Definition
Mostly sexual-
Hyphae of individual mating types unite and initiate a new mycelium, called dikaryotic hyphae through the process of plasmogamy, in which each cell has one nucleus from each original mating type.
Term
What are smuts?
Definition
Parasitic Basidiomycota
Grain crops
–Mycelium absorbs nutrients from host cells.
–Secrete substances that stimulate host cells to form tumors
Term
What is phylum Dueteromycota?
Definition
Fungi for which a sexual stage has not been observed
–Grouped together in an artificial phylum
–Most commonly reproduce by conidia
Term
What are some members of phylum Dueteromycota?
Definition
Aspergillus
-Citric acid, soy sauce, miso, artificial flavoring
-Photographic developers, dyes
-Aspergilloses (respiratory disease), athlete’s foot
-Aflotoxin (carcinogen)
Human and ecological relevance of the imperfect fungi:
Penicillium
-Antibiotics
-Gourmet cheese
Term
What are lichens?
Definition
Consist of a fungus and an alga (or blue green bacterium) intimately associated in a spongy thallus
Term
What is the realtionship between fungus and algae in lichen?
Definition
–Photosynthetic component supplies food.
–Fungus protects the photosynthetic organism from harmful light intensities, and absorbs and retains water and minerals.
•Three genera of green algae and one genus of cyanobacterium involved in 90% of all lichen species.
•Each lichen has own unique species of fungus, usually a sac fungus.
•Lichen species are identified according to their fungus.
Term
What is the upper cortex of lichen?
Definition
protective layer
Term
What is the lower cortex of lichen?
Definition
may or may not be present, covered with hyphae called rhizines for anchorage
Term
What is the algal layer of lichen?
Definition
algae cells scattered among the hyphae
Term
What is the medulla?
Definition
Loosely packed hyphae
Term
What are Crustose Lichen?
Definition
Attached to or embedded in substrate over entire lower surface
Term
What are Foliose Lichen?
Definition
Contain leaf-like thalli which often overlap
Term
What are Fruticose Lichen?
Definition
Resemble miniature upright shrubs, or hang down in festoons from branches.
Term
What are uses of lichen?
Definition
–Exceptionally sensitive to pollution
•Sulfur dioxide
–Possible to calculate amount of sulfur dioxide present in air solely by mapping occurrence or disappearance of certain lichens.
•Nuclear radiation
–Degradation of historic structures
–Food for animals - Reindeer eat fruticose lichen.
–Food supplements
–Antibiotic properties
–Dyes
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