Transport in Plants Question 8
8. If a cell A with DPD 4 bars is connected to cell B, C, D whose OP and TP are respectively 4 and 4, 10 and 5 and 7 and 3 bars, the flow of water will be
[1998]
(a) A and D to B and C
(b) A to B, C and D
(c) B to A, C and D
(d) C to A, B and D
Show Answer
Answer : c
Hints & Solutions
(c) D.P.D. or suction pressure (S.P.) $=$ O.P. - T. P. Hence D.P.D. for $A=4$ bars, $B=0$ bars, $C=5$ bars, $D=4$ bars We know that direction of movement of water is from lower D.P.D. (S.P.) to higher D.P.D. (S.P.). Thus flow will be from B to A, C, and D.
