lab3 Flashcards
(24 cards)
mycelium
group of hyphae
the mobility of reproductive cells in fungi
non-motile reproductive cells(except chytridiomycota)
fungi digestion
saprobes that use extracellular digestion
symbionts
those that live in association with other organisms where both organisms benefit
mycorrhizae
are an association with the roots of plants
- (grow in and around the roots of plants)
- (creates an environment that facilitates the uptake by the plant)
- (fungi benefit by obtaining water and nutrients from the plant roots)
facts about spores (3)
waterproof
can remain dormant
germinates and grows into hyphae
Asexual reproduction in fungi occurs by
fragmentation of the mycelium or by production of asexual spores
rhizoids
attact allomyces or rhizopus to food source, short branched
sporangia have
discharge papillae through which diploid zoospores are released for asexual reproduction
amylase
digestive enzyme in rhizopus which converts starch into sugar
The dominant stage of fungi has
cell walls composed of chitin
parasite and pathogenic don’t mean the same thing
nope they don’t
How fungi battle a lack of moisture (2)
- grow within food source, using its moisture or the moisture from the environment
- produce spores when environment dries out (these spores are waterproof, can remain dormant for years)
Fungi usually only conspicuous(noticeable) when
they undergo sexual reproduction
- their sexual structures are elevated and spores released are dispersed by air currents
sexual reproduction involves
- the fusion of gametes
- produced in gametangia
- from two different mating strains
- aseptate fungi phylums (2)
2. their nuclei are _______
- chytridiomycota, zygomycota
- have a single-celled hyphal strand(can be several meters)
- multinucleate (because multiple nuclei can fit in the long hyphal strand)
- septate fungi phylums (2)
2. their nuclei
- ascomycota and basidiomycota
2. uninucleate
In zygomycota/ascomycota/basidiomycota the fusion of hyphae results in
a resitant stage, the zygospore/ascocarp/basidiocarp(undergoes meiosis to produce spores/hold asci to produce spores/basidia on gills produce basidiospores)
chytridiomycota
- aseptate/septate
- are the most ________
- produce ______ gametes
- aseptate
- primitive
- motile
- Chytrid phylum is _______
- Our model organism is ______
- It’s troph type is _____
- it’s cellular type is ________
- It’s habitat is _______
- It obtains energy from ________
- Sessile or motile? Motile how?
- reproduction is ________
- Some adaptations are ________
- Some friends are _________
- hyphae type
- Chytridiomycota
- Allomyces
- heterotroph(saprotroph)
- muticellular
- freshwater
- Saprotroph, secretes digestive enzymes to break down it’s food
- They have motile gametes, i think they’re sessile otherwise
- thin-walled sporangia(asexually) produce diploid zoospores, thick-walled sporangia (sexually) produce haploid zoospores
- flagellated gametes to move away from organism
- Neocallimastix, bastrachochytrium
- aseptate, multinucleate
alternation of generations
alternates between a multicellular haploid generation and a multicellular diploid generation
- Bread mold phylum is _______
- Our model organism is ______
- It’s troph type is _____
- it’s cellular type is ________
- It’s habitat is _______
- It obtains energy from ________
- Sessile or motile? Motile how?
- reproduction is ________
- Some adaptations are ________
- Some friends are _________
- hyphae type
- Zygomycota
- Rhizopus
- heterotroph (saprotroph)
- multicellular
- in food source
- extracellular digestion (secretes amylase to break down starch)
- sessile
- asexually has sporangiophores(upright hyphae), sporangium at tip and spores inside the sporangium
- sexually by conjugation, branches from two haploid mating strains make gametangia, gametangia fuse to make zygosporangium, zygosporagium produce a zygospore - Lives in food source to prevent drying out, releases amylase to break down sugar
- phycomyces, entomophthora
- aseptate, multinucleate
- Sordaria phylum is _______
- Our model organism is ______
- It’s troph type is _____
- it’s hyphae type is ________
- It’s habitat is _______
- It obtains energy from ________
- Sessile or motile? Motile how?
- reproduction is ________
- Some adaptations are ________
- Some friends are _________
- Ascomycota
- Sordaria
- heterotroph (saprotroph)
- Septate, uninucleate
- dung and decaying plant matter
- saprotroph, secretes enzyme
- sessile
- mainly sexual, occurs in each ascus to produce haploid ascospores
- grows towards light, (spores can be released effectively
- ascospores are coated w/ gelantinous metaerial allowing it to stick to vegation - morchella, claviceps, ophiostoma
- Mushroom phylum is _______
- Our model organism is ______
- It’s troph type is _____
- it’s hyphae type is ________
- It’s habitat is _______
- It obtains energy from ________
- Sessile or motile? Motile how?
- reproduction is ________
- Some adaptations are ________
- Some friends are _________
- Basidiomycota
- agaricus bisporus
- heterotroph (saprotroph)
- septate, uninucleate
- soil
- saprotroph so it releases digestive enzymes
- sessile
- mainly sexual, has basidospores
- velum protects developing basidiospores
- break when spores reach maturity
- oyster mushrooms, shiitake mushrooms, bracket fungi, puffballs
