Question

Which of the following is incorrectly match :-

• A. For fully turgid cell $\Rightarrow$ DPD $=0$
• B. DPD of solution is vessel $\Rightarrow$ $OP-TP=0$
• C. For full turgid cell $\Rightarrow OP=TP$
• D. DPD for a flaccid cell $\Rightarrow DPD=OP$

Answer 1

The correct option is A For fully turgid cell $\Rightarrow$ DPD $=0$

It is reduction in the diffusion pressure of water in solution or cell over its pure state due to presence of solutes in it and forces opposing diffusion. Diffusion pressure of water is maximum and its theoretical value is 1236 atm. DPD of a solution is equal to its osmotic pressure i.e. DPD = OP(of solution) and in this case the DPD is not zero. For a turgid cell OP=TP and DPD=0. DPD for a flaccid cell is maximum and is equal to OP.

So the correct option is 'DPD of solution is vessel ⇒ OP−TP=0'.