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Transport of Molecules in Plant

Transport of Molecules in Plant
The evaporation of water from leaves is called

transpiration
tension
pressure flow
cohesion

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Transport of Molecules in Plant
The cohesion-tension theory of water movement helps to explain how water moves from soil into root?

From leaf to root
Into the guard cells
Through the xylem
Through the phloem

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Transport of Molecules in Plant
When guard cells swell

photosynthesis stops
evaporation stops
stomata open
stomata close

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Transport of Molecules in Plant
Phloem is composed of

sieve-tube elements and companion cells
tracheids and sieve-tube elements
vessel elements and companion cells
tracheids and vessel elements

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Transport of Molecules in Plant
Normally CO2 and O2 enter a plant by

diffusion
osmosis
active transport
evaporation

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Transport of Molecules in Plant
Water moves into roots of plants by

active transport
diffusion
pressure flow mechanism
osmosis

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