BESC 204 Exam 3 Questions with complete solution
Cellulose - correct answer complex carbohydrate which is the major constituent of plant cell walls (produced by the enzyme cellulase)
Lignin - correct answer the binding agent which holds plant cell walls together, primarily in wood (produc...
BESC 204 Exam 3 Questions with
complete solution
Cellulose - correct answer ✔complex carbohydrate which is the major
constituent of plant cell walls (produced by the enzyme cellulase)
Lignin - correct answer ✔the binding agent which holds plant cell walls
together, primarily in wood (produced by the enzyme ligninase)
Pectin - correct answer ✔binding agent between plant cell walls, primarily in
fruit (produced by pectinase)
Cutin - correct answer ✔the waxy material which covers the epidermal cells
of plants (produced by cutinase)
White Rot - correct answer ✔a type of wood rot that is caused by fungi that
degrades lignin
-wood degrades to dust
Brown Rot - correct answer ✔a type of wood rot that is caused by fungi that
degrades cellulose
-also known as dry rot
-wood becomes dried and cracked
Nutritional Succession - correct answer ✔the ability of some species to
utilize certain compounds for metabolism, occupying that nutritional niche
r-Selected Species - correct answer ✔-grow rapidly
, -short phase of growth
-utilizes simple nutrients
-produce many offspring with low rates of reproductive success/survival
K-Selected Species - correct answer ✔-grow slowly
-long life span
-produce few offspring with high rates of reproductive success/survival
Decomposition Sequence of Fungi - correct answer ✔1. resident microbes
on tissue
2. pioneer saprotrophic fungi
3. polymer degrading fungi
4. degraders of more recalcitrant resources
Wind Dispersal - correct answer ✔spore dispersal by wind, on exposed
hyphae, on/in fruit bodies
-ex. shaggy mane, puffballs, earthstars, basidiomycetes
Buller's Drop - correct answer ✔way of spore dispersal by basidiomycetes
-water coats the spore
-water droplet forms at base of spore and conidium
-water droplet grows until it contacts the spore
-water droplet redistributes the center of gravity and catapults spore into wind
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