Multiple Choice Quiz


1	A varying landscape creates:
		A)	elevated macroclimates
		B)	diverse microclimates
		C)	thermal stability in organisms
		D)	behavioral stability in organisms


2	Water’s relatively high latent heat of fusion:
		A)	means ice cubes take a long time to make
		B)	makes it cool the surroundings as it evaporates
		C)	is more consequential for riparian plants than pond plants
		D)	none of the above


3	Enzymes:
		A)	affect synapse rates
		B)	are destroyed at high temperatures
		C)	relate to an organism’s performance
		D)	all of the above


4	Adaptation:
		A)	is physiological
		B)	is generally reversible
		C)	both a and b
		D)	none of the above


5	Morita’s work with psychrophilic bacteria indicated:
		A)	the freezing point cannot be exceeded by bacteria
		B)	although bacteria survive below freezing, they do not reproduce
		C)	bacteria can reproduce below freezing
		D)	any species of bacteria can function over a wide range of temperatures


6	Desert plants meet challenges of high temperatures by:
		A)	sharply reducing metabolic heat
		B)	becoming poikilothermic in alternating generations
		C)	increasing losses by convection
		D)	assuming a cushion growth form


7	Changing daytime orientation is a regulatory strategy of:
		A)	alpine plants
		B)	arctic plants
		C)	desert plants
		D)	grasshoppers
		E)	all of the above


8	A species with a large thermal neutral zone is:
		A)	arctic fox
		B)	dolphin
		C)	human
		D)	sloth


9	Heinrich’s study of sphinx moths included:
		A)	ideal subjects because their small body sizes lost little heat by convection
		B)	determining the mechanism for heat transfer to the abdomen
		C)	showing how social groups helped maintain constant body temperature
		D)	elegant sun-shade manipulations on sand substrate


10	Hummingbirds:
		A)	maintain a high body temperature at night if food is abundant
		B)	stilt
		C)	were found to lose the amount of weight predicted by Calder
		D)	indicated forest cover types in Iberia, which, in turn, tracked land snails


11	True or False: At high air temperatures, photosynthesis will produce less CO2.
		A)	True
		B)	False


12	True or False: A permanent physiological adjustment by an organism to an extreme environmental factor such as temperature is known as acclimation.
		A)	True
		B)	False


13	True or False: A resting stage occuring in winter, if temporary, is called estivation.
		A)	True
		B)	False


14	True or False: Endothermy in aquatic species is associated with breathing through gills.
		A)	True
		B)	False


15	True or False: Macroclimate changes of only a few degrees C can potentially lead to extinction of some species.
		A)	True
		B)	False

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