Multiple Choice Quiz


1	A multi-factor greenhouse experiment by Johnson used two:
		A)	sources of fungi
		B)	sources of soil
		C)	sterilization regimes
		D)	all of the above


2	A major question explored by Johnson was:
		A)	Can sterilized soils be successfully reinnoculated with fungi?
		B)	Does higher availability of nutrients reduce plant benefits from fungi?
		C)	Is nitrogren or phosphorus more important to topsoil formation?
		D)	Will pollinators of Andropogon select for different root-shoot ratios?


3	A consequence of Johnson’s work might be farmers:
		A)	finding biological control agents for fungi
		B)	adding river-washed sand to their fields
		C)	accepting fungal services instead of buying fertilizer
		D)	waiting to innoculate crop plants until they are 12.5 weeks old


4	The author of our text, Molles, sees mutualism:
		A)	as a shifting balance of benefits between organisms
		B)	as uncommon, but fascinating for ecologists
		C)	as common, but only in tropical forest ecosystems
		D)	being most common between closely related species


5	Ants benefit acacias by:
		A)	increasing rates of evaporative cooling from leaves
		B)	increasing visits from pollinators
		C)	decreasing visits from herbivores
		D)	decreasing visits from pollinators of neighboring plants


6	Acacias benefit ants by providing:
		A)	Beltian bodies
		B)	Acacian bodies
		C)	Martian bodies
		D)	springy “launch pads” for aerial courtship displays


7	A mutualistic linkage between aspen sunflowers and ants is:
		A)	interesting, because it is one of the only mutualisms known from temperate ecosystems
		B)	loose, because of killing frosts
		C)	hypothesized, now that the sunflowers have been accidentally introduced into the ant’s home range
		D)	persisting, despite work by Inouye and Taylor to show that herbivores were undeterred by ant presence


8	Corals are:
		A)	oceanic plants
		B)	unicellular
		C)	animals
		D)	oceanic fungi


9	True or False: Corals are protected by crabs.
		A)	True
		B)	False


10	True or False: Crabs feed on coral mucus.
		A)	True
		B)	False


11	True or False: Keeler asserted that for a population to be mutualistic, there must be fitness benefits.
		A)	True
		B)	False


12	True or False: Isack and Reyer asserted that humans are important mutualists for South American honeybirds.
		A)	True
		B)	False

2002 McGraw-Hill Higher Education
Any use is subject to the Terms of Use and Privacy Notice.
McGraw-Hill Higher Education is one of the many fine businesses of The McGraw-Hill Companies.