TRANSPORT OF MOLECULES IN PLANT QUIZ

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

Through the phloem

Through the xylem

From leaf to root

Into the guard cells

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Phloem is composed of

sieve-tube elements and companion cells

tracheids and vessel elements

vessel elements and companion cells

tracheids and sieve-tube elements

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When guard cells swell

stomata open

photosynthesis stops

stomata close

evaporation stops

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

osmosis

diffusion

bulk flow

active transport

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Normally CO2 and O2 enter a plant by

osmosis

active transport

diffusion

evaporation

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Water moves into roots of plants by

diffusion

pressure flow mechanism

osmosis

active transport

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The evaporation of water from leaves is called

pressure flow

tension

transpiration

cohesion

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