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Transport of Molecules in Plant

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

bulk flow
active transport
osmosis
diffusion

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

evaporation
diffusion
active transport
osmosis

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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
Through the phloem
Through the xylem
Into the guard cells

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Transport of Molecules in Plant
Phloem is composed of

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

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

pressure flow hypothesis
transpiration
cytoplasmic streaming
root pressure theory

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