Transport of Molecules in Plant – Section 1

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

A. Through the phloem
B. From leaf to root
C. Through the xylem
D. Into the guard cells

Correct Answer: C. Through the xylem

7. When guard cells swell

A. stomata close
B. stomata open
C. photosynthesis stops
D. evaporation stops

Correct Answer: B. stomata open

8. Water moves into roots of plants by

A. osmosis
B. active transport
C. diffusion
D. pressure flow mechanism

Correct Answer: A. osmosis

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