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TRANSPORT OF MOLECULES IN PLANT

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

transpiration
root pressure theory
cytoplasmic streaming
pressure flow hypothesis

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Transport of Molecules in Plant
Phloem is composed of

tracheids and sieve-tube elements
tracheids and vessel 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

osmosis
diffusion
active transport
bulk flow

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

tension
transpiration
cohesion
pressure flow

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

diffusion
active transport
evaporation
osmosis

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