Explain the following assertion and reasoning problem.
Assertion:According to the theory proposed by Godlewski, water rises in the stem due to living tissues.
Reason:Water rises due to pulsatory activity of xylem parenchyma and medullary rays.
Both assertion and reason are correct and reason is correct explaining of the assertion.
Godlewski proposed a hypothesis known as relay pump hypothesis of ascent of sap. According to this hyposthesis, living tissues in the xylem bring about a pumping action of water in an upward direction. This movement of water is caused by the pulsatory activity (change in pressure and water content) of living tissues like xylem parenchyma and medullary rays.
Godlewski proposed a hypothesis known as relay pump hypothesis of ascent of sap. According to this hyposthesis, living tissues in the xylem bring about a pumping action of water in an upward direction. This movement of water is caused by the pulsatory activity (change in pressure and water content) of living tissues like xylem parenchyma and medullary rays.