Question

In a fully turgid cell, the values of DPD, OP and TP should be

• A. DPD $=$ 10 atm, OP $=$ 15 atm, TP $=$ 5 atm
• B. DPD $=$ 5 atm, OP $=$ 12 atm, TP $=$ 7atm
• C. DPD $=$ 2 atm, OP $=$ 7 atm, TP $=$ 5 atm
• D. DPD $=$ 0 atm, OP $=$ 15 atm, TP $=$ 15 atm

Answer 1

The correct option is D DPD $=$ 0 atm, OP $=$ 15 atm, TP $=$ 15 atm

The diffusion pressure deficit (DPD) is the force responsible for movement of water. In plants water moves from a region of low DPD to high DPD. The DPD is calculated as algebraic difference of osmotic pressure (OP) and turgor pressure (TP). In a fully turgid DPD will be 0 as a fully turgid cell will not absorb water and values of OP and TP shall be equal.