Multiple choice

Which among the following statements regarding the upwards water transport by xylem is incorrect?

  1. Metaxylem develops after the protoxylem but before the secondary xylem.

  2. The xylem transports water and soluble mineral nutrients from the roots throughout the plant.

  3. Root pressure is lowest in the morning.

  4. Adhension is the force responsible for the capillary action movement of water.

  5. Transpirational pull requires that the vessels transporting the water are very small in diameter.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Root pressure is highest in the morning, before the stomata open and allow transpiration to begin. Different plant species can have different root pressures even in a similar environment.

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