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Biology
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Biology
Main Organ of Gaseous Exchange
Biology
Question
Main Organ of Gaseous Exchange
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Stoma
Pores that are located on the leaf lower epidermis
Guard cell
A pair of cell that regulate the opening and closing of stoma
The condition of the guard cell is influenced by two things
Intake of potassium ion & the concentration of sucrose in the cell sap
The condition that causes the stoma to open
When potassium and sucrose concentration rise in the guard cell and cause water to permeate into the cell by osmosis.
The condition that causes the stoma to close
When the concentration of potassium and sucrose ions decreases in the control cell causing water to osmotically diffuse out.
Water diffuses in and out of the guard cell through
Osmosis
The condition of the stoma when the plant is dehydrated
The condition of the stoma when the plant has enough water
Effect of flaccid guard cells
Effect of turgid guard cells
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Main Organ of Gaseous Exchange
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