Question

'A' and 'B' are two adjacent living cells. The cell 'A' has solute potential (${\psi _s}$) of -9 bars and pressure potential (${\psi _p}$) of 4 bars, whereas cell 'B' has solute potential (${\psi _s}$) of -8 bars and pressure potential (${\psi _p}$) of 5 bars. What will be the direction of water movement between these cells?
A. Cell A to Cell B
B. Cell B to Cell A
C. Do not move in any direction
D. Moves in both the directions

Answer 1

Hint: Plants use water potential to ship water to the leaves with the goal that photosynthesis can happen. Water potential is a proportion of the likely energy in water just as the distinction between the potential in a given water test and unadulterated water.

Formula used: ${\psi _{system}}$ = ${\psi _{total}}$ = ${\psi _s} + {\psi _p} + {\psi _g} + {\psi _m}$ + ${\psi _p}$

Complete step by step answer:
Water potential is indicated by the Greek letter $\psi $ (psi). It is the proportion of the general propensity of water to move to start with one zone then onto the next and are estimated in the terms of bars. It is the distinction between the free energy of water particles in unadulterated water and arrangement. Here, the water development over the focus angle will be higher water potential to bring down water potential.
In the above inquiry, it is given as follows,
Cell A: ${\psi _s}$ = - 9 bars,
${\psi _p}$ = 4 bars and
Hence, water potential of A $({\psi _s} + {\psi _p} = - 9 + 4)$ = - 5 bars.
Cell B: ${\psi _s}$ = - 8 bars,
${\psi _p}$ = 5 bars and
Hence, water potential of B $({\psi _s} + {\psi _p} = - 8 + 5)$ = - 3 bars.
On account of water Potential ($\psi $), water development will have higher water potential to bring down water potential i.e., from cell B to cell A.
The water development cannot be from cell A to cell B as water will move from the cell having lower OP to the one having higher OP because OP creates because of solute particles in the arrangement.
If the power applied by both the powers is equivalent, the net power is zero thus the water does not move toward any direction. Accordingly, adjusted powers are following up on the water. Cell
Water moves from regions of a low grouping of solute to regions of high centralization of solute. So assimilation just happens with a semipermeable layer, and even with the membrane, some water will move the two sides.
Hence, Option (b) Cell B to Cell A is a suitable answer.

Note: By convention, the water capability of unadulterated water is given the worth zero. At whatever point a solute is added to water, there is a diminishing in water potential. In this way, water potential for cell A is - 5 bars and the water capability of cell B is - 3 bars. Water streams from a region of higher water potential to a district of lower water potential. For this situation, water will spill out of cell B, which has a water capability of - 3 bars to cell A, which has a water capability of - 5 bars.