Modern theory of stomatal opening is?
a.K+ exchange
b.Sugar transport
c. Active transport
d. Osmosis
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K+ exchange is the answer
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Modern theory of stomatal opening is K+ exchange.
Hence the correct answer is option A. Guard cells can be referred as the cells surrounding every stoma.
It helps for regulating the transpiration rate by closing and opening of the stomata.
The function of stomata is generally caused by accumulation of the K+ (the potassium ions) in case of the guard cells.
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