Multiple Choice Quiz


1	Organismal responses to water in air are most conveniently described using:
		A)	relative humidity
		B)	absolute humidity
		C)	absolute water vapor pressure
		D)	vapor pressure deficit
		E)	deficit relative vapor


2	If the water potential of plant tissue is less than the water potential of the soil:
		A)	water flows to the plant
		B)	water is lost to the soil
		C)	salts will not diffuse
		D)	none of the above


3	Under some conditions, water:
		A)	is used for plant secretions
		B)	is pulled through leaves by evaporation
		C)	can be taken from soil by plant roots
		D)	can be absorbed by plants from air
		E)	all of the above


4	Which term does not belong?
		A)	Namib
		B)	fog
		C)	Brazil
		D)	beetle


5	Park found:
		A)	kangaroo rats get enough water through their food sources
		B)	plants with deep roots maintain higher water potentials
		C)	cicadas use evaporative cooling
		D)	cuticular hydrocarbons in beetles vary with habitat


6	Camel adaptations include:
		A)	a tendency to face into the sun
		B)	keeping their heads low during mid-day
		C)	thin hair to increase sweating
		D)	frequent, small intakes of water throughout the day and night


7	Losing massive quanitites of water each day, cicadas:
		A)	often perish when temperatures rise above 36 degrees C
		B)	can change macroclimate for other organisms
		C)	effectively nurse developing plant roots
		D)	none of the above


8	True or False: Freshwater fish lose large amounts of water but small amounts of salt.
		A)	True
		B)	False


9	True or False: Evapotranspiration can be calculated by subtracting runoff from precipitation.
		A)	True
		B)	False


10	True or False: A special case of osmosis is when diffusion matches vapor pressure deficit.
		A)	True
		B)	False

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