Water potential - class-XII
Description: water potential | |
Number of Questions: 27 | |
Created by: Preeti Dasgupta | |
Tags: transport in plants plant water relation biology |
The water potential is?
If the solute is added in the given solution than what observation can be made?
If some solute is dissolved in pure water, its water potential
Amount of water, to be used in photosynthesis and plant growth, is
Which one is correct?
Which of the relations is correct
The water potential of imbibants is:
Water potential of a cell when it is placed in hypertonic solution:-
Select the correct statements w.r.t water potential
(a) the greater the concentration of water in a system the greater is its Kinetic energy
(b)water will move from high $\Psi _w to low \Psi _w$
(c)process of movement of substance down a gradients of free energy is called diffusion
(d)Solution has fewer free water and thus its water potential is less
Water potential in a cell
Cell A and cell B are adjacent plant cells. In cell A, $\psi s$ = - 20 bars and $\psi _p$ = 8 bars. In cell B, $\psi _s$ = - 12 bars and $\psi _p$ = 8 bars. Then ______________.
The movement of water into and out of cells is controlled by
What is the effect on the value of DPD when the water potential of that cell is increased :-
0.5 M sucrose develops a pressure of 15 bars in an osmometer. Which of the following statement is wrong for such a solution ______________.
Pick the CORRECT statement(s) in the following.
I. Increase in solute potential of a solution increases its water potential.
II. Water potential of pure water is taken as zero.
Water moves from a cell with _______ water potential to a cell with _______ water potential.
Two cells are kept in $1\ M$ solution of sucrose and $1\ M$ solution of $NaCl$. The water potential $(\Psi {m})$ of the cells kept in _______________.
The concentration of solute in four cells iis 0.4 M. They are placed in four separate containers I, II, III and IV, filled with saline water of concentrations 0.1 M, 0.4 M, 2 M, and 3 M respectively. In which container will the cell swell?
Water will move from the root hair through cortex if the water potentials are _________________________.
Read the following statements and select the correct option.
(i) Pure water has the highest water potential, i.e., zero.
(ii) Process of diffusion does not require any input of energy.
(iii) Water moves from the system containing water at higher water potential to the one having lower water potential.
Water potential of plasmolysed cell will be :
If a cell A with DPD $=5$ bars is connected to cells B, C and D, whose OP and TP are respectively $5$ and $5$, $10$ and $4$, and $8$ and $3$, the flow of water will be _______________.
Choose the correct answers from the alternatives given.
Water potential of a cell is lowered by the
Choose the correct answers from the alternatives given :
Water potential is generally most negative in
Choose the correct answers from the alternatives given :
Water potential is affected by