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Question
The osmotic theory of active water absorption was first given by
The osmotic theory of active water absorption was first given by
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Solution
The correct option is C Atkins (1916)
Absorption of water by roots in plants takes place with the help of ATP that is generated by the root respiration. The ATP provides the force for water absorption. This phenomenon is called active water absorption. The active water absorption is carried out in two ways, namely active osmotic water absorption and active non-osmotic water absorption. Active osmotic water absorption theory was first given by Atkins in 1916. It was later given by Priestley in 1921. According to this theory, the root cells act as an osmotic pressure system. In this, water is absorbed from soil to root xylem along the increasing D.P.D. gradient. If the solute concentration is high and water potential is low in the root cells, water enters to root cells through endosmosis. The whole process takes place with the utilization of ATP. Thus, the correct answer is option C.
Absorption of water by roots in plants takes place with the help of ATP that is generated by the root respiration. The ATP provides the force for water absorption. This phenomenon is called active water absorption. The active water absorption is carried out in two ways, namely active osmotic water absorption and active non-osmotic water absorption. Active osmotic water absorption theory was first given by Atkins in 1916. It was later given by Priestley in 1921. According to this theory, the root cells act as an osmotic pressure system. In this, water is absorbed from soil to root xylem along the increasing D.P.D. gradient. If the solute concentration is high and water potential is low in the root cells, water enters to root cells through endosmosis. The whole process takes place with the utilization of ATP.
Thus, the correct answer is option C.
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