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Transport of Molecules in Plant

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

osmosis
evaporation
active transport
diffusion

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

osmosis
pressure flow mechanism
active transport
diffusion

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Transport of Molecules in Plant
Phloem is composed of

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

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Transport of Molecules in Plant
The movement of most minerals, including potassium into root cells is by

diffusion
bulk flow
active transport
osmosis

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Transport of Molecules in Plant
A widely accepted explanation for transport of sugar in phloem is called

root pressure theory
transpiration
pressure flow hypothesis
cytoplasmic streaming

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

tension
cohesion
transpiration
pressure flow

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