(v)The tiny opening on the stems and roots of plants are called
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Stomata (noun, “STO-mah-tah”, singular “stoma”) These are the small pores in plant stems or leaves that allow carbon dioxide in and oxygen and water vapor out. Each tiny hole is surrounded by a pair of cells called guard cells. ... Plants in wetter places aren't so predictable.
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In stems are lenticels and in leaves stomata
The help in the exchange of gases
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