The water in xylem rises due to the _ force of transpiration and the _ force of root pressure.

pushing, pulling

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pushing, pushing

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pulling, pushing

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pulling, pulling

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Solution

The correct option is C pulling, pushing
Transpiration creates a suction force and pulls up the water in the xylem. On the other hand, root pressure pushes the water in the xylem upward.

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Similar questions

The major driving force for transport of water through xylem in plants, during the day, is __(i)__ and during the night, is __(ii)__.

Q. On a warm summer day, the transpiration pull is the main force that drives from root parenchyma into the root xylem. The table shows values of

ψ_{p}

(pressure potential) and

ψ_{s}

(solute potential) in root xylem and root parenchyma, in kPa. In which of the options (a-d) would transpiration pull cause water to move from root parenchyma into the root xylem?

Root parenchyma		Root xylem
$ψ_{p}$	$ψ_{s}$	$ψ_{p}$	$ψ_{s}$
(a) $200$	$- 190$	$- 200$	$5$
(b) $- 200$	$220$	$65$	$- 5$
(c) $200$	$- 220$	$65$	$- 5$
(d) $200$	$- 220$	$- 65$	$- 5$

Q. Go through the four statements given beIow:
I. Root pressure provides a light push in the overall process of water transport.
II. Most plants meet their water need by transpiration pull.
III. The greatest contribution of root pressure may be to re-establish the continuous chains of water molecule in the xylem vessel which often break under enormous tension created by transpiration.
IV. Guttation is the cause of transpiration pull.

The correct statements are

Q. Which pressure developed in the root, forces the water into xylem vessel and upwards into the stem for a certain height?

Absorption of minerals by the epidermal cells of root and root hair causes the water to enter from surrounding soil into roots. It further reaches the root xylem. Thus, due to a continuous uptake of water by root cells, a water pressure is created in the root xylem. This pressure is called as________

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The water in xylem rises due to the _____ force of transpiration and the _____ force of root pressure.

The correct option is C pulling, pushingTranspiration creates a suction force and pulls up the water in the xylem. On the other hand, root pressure pushes the water in the xylem upward.

The water in xylem rises due to the _ force of transpiration and the _ force of root pressure.

The correct option is C pulling, pushing
Transpiration creates a suction force and pulls up the water in the xylem. On the other hand, root pressure pushes the water in the xylem upward.