TRANSPORT OF MOLECULES IN PLANT QUIZ

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

Through the phloem

Through the xylem

Into the guard cells

From leaf to root

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

transpiration

pressure flow hypothesis

root pressure theory

cytoplasmic streaming

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When guard cells swell

photosynthesis stops

stomata open

stomata close

evaporation stops

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Water moves into roots of plants by

diffusion

osmosis

pressure flow mechanism

active transport

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The movement of most minerals, including potassium into root cells is by

bulk flow

active transport

osmosis

diffusion

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The evaporation of water from leaves is called

cohesion

transpiration

pressure flow

tension

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Normally CO2 and O2 enter a plant by

osmosis

active transport

evaporation

diffusion

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Phloem is composed of

tracheids and vessel elements

tracheids and sieve-tube elements

sieve-tube elements and companion cells

vessel elements and companion cells

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