BIOL 1108 Fungi Questions & answers

BIOL 1108: Fungi

what are the 3 ways fungi get food - ANS-saprobes (decomposers), parasities,
mutualists

how do fungi eat - ANS-absorptive heterotrophy: external digesters, absorb through
plasma membrane

what is the purpose of chitin in the cell wall of fungi - ANS-structural support

how do fungi react to their environments - ANS-best suited for moist environments,
hypertonic and temp. tolerant

what are the unicellular fungi - ANS-yeasts

what are characteristics of yeasts - ANS--asexual reproduction by budding
-ideal for in vitro work
-saccharomyces cerevisiae: bakers yeast (makes CO2)

what are characteristics of multicellular fungi - ANS--mycelium body made of hyphae
filaments (digestion)
-some have spore producing (fruiting) structures

what are the 3 main phyla of fungi - ANS-zygomycota (rhizopus), ascomycota
(penicillium), basidiomycota (mushrooms)

how does asexual reproduction occur in fungi - ANS-'molds', formation of haploid
spores in sporangia, conidia, or budding

what does the lifecycle of fungi look like - ANS-

what is plasmogamy - ANS--fused hypha membranes
-dikaryotic (n+n) in ascomycota/basidiomycota
-heterokaryotic (n+n) in zygomycota

what is karyogamy - ANS-fusion of nuclei (2n): fertilization

are spores haploid or diploid - ANS-haploid (n)