TRANSPORT OF MOLECULES IN PLANT QUIZ

Normally CO2 and O2 enter a plant by

active transport

evaporation

diffusion

osmosis

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The evaporation of water from leaves is called

cohesion

tension

transpiration

pressure flow

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Water moves into roots of plants by

diffusion

pressure flow mechanism

active transport

osmosis

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

From leaf to root

Through the xylem

Into the guard cells

Through the phloem

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When guard cells swell

photosynthesis stops

stomata open

stomata close

evaporation stops

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

diffusion

active transport

bulk flow

osmosis

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Phloem is composed of

tracheids and sieve-tube elements

sieve-tube elements and companion cells

tracheids and vessel elements

vessel elements and companion cells

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

pressure flow hypothesis

transpiration

root pressure theory

cytoplasmic streaming

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