Question

guard cell swell up during the day and shrink during the night​

Answer 1

Answer:

At sunrise, K + ions are pumped into the guard cells, raising their internal ionic concentration and causing water to follow by osmosis. Hence the guard cells swell and the pore opens. In order to close the pore, K + ions are pumped out of the guard cells, causing them to lose water osmotically and shrink........

Due to this formation of malice acid takes place in the guard cells. ... Due to this the water potential in the guard cells decreases and water moves inside the guard cells causing them to swell up and become turgid which in turn causes the opening of stomata pores.....

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