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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
pressure flow hypothesis
cytoplasmic streaming

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Transport of Molecules in Plant
Phloem is composed of

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

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

diffusion
osmosis
bulk flow
active transport

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

pressure flow
cohesion
tension
transpiration

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

diffusion
evaporation
osmosis
active transport

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