UNIT 4 MULTIPLE CHOICE Flashcards
what are the characteristics of fungi?
-belong to kingdom fungi
-unicellular (yeast) or multicellular
-eukaryotic heterotrophs (absorb their food)
-decomposers (saprophytic/saprobe)
what are the major features of fungi
-cell walls of fungi are composed of chitin
-hyphae (tube like filaments) form a netlike mass called mycelium
-hyphae provide larger area for nutrient absorption
hyphae are divided into cells by cross-walls called?
septa
what does septa allows?
allow nutrients, cytoplasm, and organelles to flow between cells
some fungi are _____; materials flow freely.
aspeta
how does fungi digest food?
digest it before consuming it
what happen in fungi’s digestive enzymes?
break down food and then they absorb their nutrients
what are the three types of how fungi obtain their nutrients? how they differ?
-saprophytic fungi (decomposers)
-parasitic fungi (requires a host)
-mutualistic fungi (both organisms benefit)
fungi are classified in their phylum by their?
structures and patterns of reproduction
what is budding?
-new cell develops while attached to the parent cell
-plasma membrane pinches off to separate the new cell and the parent cell
what is fragmentation?
-occurs when mycelium is broken apart
-fragment of mycelia land in a location suitable for growing, then hyphae will grow into new mycelia
what life cycles most of fungi reproduces?
-asexual and sexual
define spore production.
-develops into a new organism without the fusion of gametes
-produce new hyphae that form mycelium
what are the 5 classifications of fungi?
-chytridiomycota (chytrids)
-zygomycota (common molds)
-ascomycota (sac fungii)
-basidiomycota (club fungi)
-deuteromycota (imperfect fungi)
what are the characteristics of zygomycota (common molds)?
-multiccellular
-most are terrestrial
-many form mutualistic relationship
-reproduce asexual and sexual
