Question

*114) Which of the following changes in the cell
sap
of the guard cells is responsible for keeping the
stomata open during day time?
1) Increase in OP but decrease in TP
37 Decrease in OP but increase in TP
3) Decrease of both OP and TP be
4) Increase of both OP and TP
902
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Answer 1

Answer:

DPD is diffusion pressure deficit. It is calculated by algebraic difference of osmotic pressure and turgor pressure. Water flows from a region of low DPD to a region of high DPD. Thus, any factor which increases DPD will favour movement of water into the cell.  

During stomatal opening water moves into the guard cells and they swell and become turgid. This movement of water into the guard cells is made possible due to a an increase in DPD (increase in OP and decrease in TP)

Explanation:

hope it helps u

Answer 2

Answer:

4 -Increase in both OP and TP

Explanation:

As there is increase in osmotic pressure

Lead to

Entering of water to the guard cell

Increase in Turgor pressure ,which is nothing but the tension attended by the guard cell

Then the Guard cell opens

In Night time it reverse