Question

How water is taken up from soil to the xylem tissue of the plant roots?
(a) xylem attracts water molecules
(b) roots act as a suction pump for taking water
(c) soil expels the water with pressure to the xylem
(d) difference in the ion concentration creates a gradient for water movement

Answer 1

root act as a suction pump for taking water

Answer 2

Water is taken up from the soil to the xylem tissue of the plant roots when roots act as a suction pump for taking water.

.

• In the roots of the plant, a positive pressure is formed on which the root pressure depends. With the help of a process known as osmosis, water is moved from the soil into the roots. This is done because of the presence of low solute potential present in the roots.
• In the root xylem, water potential gets increased due to the water intake in the roots.
• This results in driving up the water from the soil via roots to the xylem tissues.

Hence, roots play the role of the suction pump is driving the water upwards into the xylem tissues from the soil.