A : Root pressure is dynamic and is always a | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) Root pressure is defined as the positive hydrostatic pressure that develops in the xylem sap of roots due to the active absorption of mineral ions

Vedclass · Accepted Answer

Assertion is correct,but Reason is incorrect.

Vedclass · Answer

(C) Root pressure is defined as the positive hydrostatic pressure that develops in the xylem sap of roots due to the active absorption of mineral ions.It is a dynamic process because it depends on the metabolic activity of root cells.However,root pressure is not a universal phenomenon; it is observed only in certain plants under specific conditions (e.g.,high soil moisture and low transpiration).It typically develops when the rate of water absorption is greater than the rate of transpiration,often referred to as an absorption lag or during periods of low transpiration like the night.Since the Assertion is correct but the Reason claims it is a universal phenomenon (which is false),the correct option is $C$.

$A$ : Root pressure is dynamic and is always a positive hydrostatic pressure.
$R$ : It is a universal phenomenon and develops under absorption lag.

Similar Questions

Which property of water plays a very important role in the process of ascent of sap in plants?

Guttation is caused by which of the following?

Most water absorption in plants takes place through

The continuity of the water column in the $xylem$ is maintained due to

Water is mainly transported to shoot tips by the help of

Vedclass Test Series

Exam Paper Generator

Online Exam Module

$A$ : Root pressure is dynamic and is always a positive hydrostatic pressure.$R$ : It is a universal phenomenon and develops under absorption lag.