besc 204 tamu exam 1 question and answers correctl
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BESC 204
BESC 204
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BESC 204 TAMU EXAM 1 Question and
answers correctly solved
fungi - correct answer ✔-own kingdom
-3 domains (archea,eukarya,eucaryota)
-eukaryotic
-heterotrophic
-no chlorophyll
-obtain nutrients by absorption
-reproduce by spores
-exhibit a pronounced polarization of growing cells
hyphae - correct answer ✔each of the branching filaments that make up the
mycelium
-elongate by tip growth
mycelium - correct answer ✔vegetative part of a fungus, consisting of a
network of fine white filaments
-ex: fairy ring, ringworm etc.
-biggest one: 2200 acres;650tons;2400yearsold
septa - correct answer ✔-"cell compartmentalization"
-make fungi fundamentally different from other multi-cellular organisms
cell compartment - correct answer ✔-increases surface area of the cell
membranes
-necessary for obtaining nutrients and excreting waste
, -means of increasing membrane without increasing the size of the cell
-exceptions:yeast-single celled organsim
Woronin Bodies - correct answer ✔-dense-core organelles that are found
exclusively in filamentous fungi
-seal septal pore in response to wounding (scab)
-consist of a membrane-bound protein matrix comprised of the HEX protein
-formed from peroxisomes
Mycology - correct answer ✔the study of fungi
mycologist - correct answer ✔a scientist who studies fungi
morphological species concept - correct answer ✔-things that look the same
are of the same species
-must fungal species defined this way (particularly for species with no known
sexual reproduction)
Biological species concept - correct answer ✔-requires 2 individuals to be
able to mate AND produce viable offspring
-difficult with fungi b/c mating either doesn't work in lab or can be forced when
it wouldn't happen in nature
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