Problem 24
If \(\Psi_{-}=\)water potential; \(\Psi_{s}=\) solute potential; \(\Psi_{p}=\) pressure potential, then select the correct equation showing their inter- relation. (a) \(\Psi_{w}=\Psi_{s}-\Psi_{p}\) (c) \(\Psi_{s}=\Psi_{\mathrm{ll}}+\Psi_{p}^{\prime}\) (b) \(\Psi_{\mathrm{L}}=\Psi_{s}+\Psi_{p}\) (d) \(\Psi_{\mathrm{w}}=\Psi_{s}^{\prime}=\Psi_{p}^{p}\)
Problem 27
Match Column-I with Column- \(\|\) and select the correct option from the codes given below. Column-I \(\quad\) Column-II A. Hypotonic (i) No net flow of water B. Hypertonic (ii) Water moves into the cell C. Isotonic (iii) Water moves out of the cell (a) \(A-(i i), B-(i i i), C-(i)\) (b) \(A\)-(iii), B-(ii), C-(i) (c) \(A-(i), B-(i i), C-(i i i)\) (d) \(A-(i i), B-(i), C-(i i i)\)
Problem 28
The hydrostatic pressure developed inside the cell on the \(37 .\) cell wall due to endosmosis is called (a) osmotic potential (b) diffusion pressure (c) wall pressure (d) turgor pressure.
Problem 32
The plant cell cytoplasm is surrounded by both cell wall and cell membrane. The specificity of transport of substances is mostly across the cell membrane, because (a) cell membrane is impermeable (b) cell membrane is selectively permeable (c) cell membrane is fully permeable (d) cell wall is impermeable.
Problem 34
A plasmolysed cell can be deplasmolysed by (a) pure water or hypotonic solution (b) hypertonic solution (c) isotonic solution (d) saturated solution.
Problem 35
The restoration of turgidity in a plasmolysed placed in a hypotonic solution is caused by (a) hydration (b) electrolysis (c) plasmolysis (d) deplasmolysis.
Problem 38
Pressure exerted by cell wall to balance turgor presore. called (a) wall pressure (b) \(\mathrm{OPD}\) (c) water potential (d) osmotic pressure.
Problem 45
Which of the following statements is/are correct? (a) Bacteria do not survive in salted pickles because they get plasmolysed in hypertonic medium. (b) Osmotic potential is numerically equal to the osmotic pressure but is negative in sign. (c) Kneading of wheat flour is accompanied by release of heat which is due to imbibition. (d) All of these.
Problem 46
Water passes into a cell due to (a) \(O P\) (b) \(\mathrm{DPD}\) (c) turgor pressure (d) diffusion.
Problem 48
If cell \(A\) with DPD 5 atm is surrounded by many cells with DPD 4 atm then (a) the net movement of water will be from cell \(A\) to the surrounding cells (b) net movement of water will be from the surrounding cells to cell \(A\) (c) water will not move at all (d) water movement will depend on other unknown factors.
