a)Label the parts A and B.
b)mention its function
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A - stomata( singular: stoma), B- guard cells
Stomata are pores that help in transpiration and gaseous exchange of O2 and CO2.
Guard cells play a function in the opening and closing of stomata. When they gain water and become turgid, the pores open and when they lose water and become flaccid, the pores close.
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