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Abiotic Factors and Transpiration CFU
Xylem Structure and Function
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What are abiotic factors?
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1 point
non-living chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems.
any living component that affects another organism or shapes the ecosystem.
a continuous area or expanse which is free, available, or unoccupied,
a biological community of interacting organisms and their physical environment.
Which describes the rate of transpiration:
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water gained in the root per unit time
total water lost from the leaf
water lost from the leaf per unit time
total water gained in the root
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Match the term to the definition:
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4 points
wind speed
light intensity
humidity
temperature
the quantity of visible light that is emitted
a measure of the thermal energy of matter
the concentration of water vapour present in the air
the rate at which air moves from high to low pressure
wind speed
light intensity
humidity
temperature
the quantity of visible light that is emitted
a measure of the thermal energy of matter
the concentration of water vapour present in the air
the rate at which air moves from high to low pressure
In warmer temperatures, molecules are:
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moving slower
moving faster
not moving
Warm air can hold _______ water than cold air.
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less
more
Increased __________, ______________ the rate of transpiration.
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increases
decreases
humidity
temperature
light intensity
wind speed
increases
decreases
humidity
temperature
light intensity
wind speed
Plants must ________ stomata to perform photosynthesis, which mostly occurs during the ______.
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close, night
close, day
open, night
open, day
The glucose made during photosynthesis makes the guard cells more ________, so water will move _________ and the stoma will _________.
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hypertonic, in, open
hypotonic, in, open
hypertonic, out, open
hypotonic, out, open
hypertonic, in, close
hypotonic, in, close
hypertonic, out, close
hypotonic, out, close
Plants need _____ and light to perform photosynthesis, so when there is a higher light intensity, the stomata are _______ which means that water will _______ of the plant at a higher rate.
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CO2, open, out
O2, open, out
CO2, closed, out
O2, closed, out
CO2, open, in
O2, open, in
On a humid day, there is a ________ concentration gradient between the water in the leaf and the water in the air, as a result the rate of transpiration will be ________.
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greater, lower
smaller, lower
greater, higher
smaller, higher
High wind causes a __________ concentration gradient between the water in the leaf and the water in the air, as a result the rate of transpiration will be ________.
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1 point
greater, lower
smaller, lower
greater, higher
smaller, higher
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