Submerged aquatic plants can take up CO₂ from the water in all of the following ways,except
A) diffusion through stomata.
B) direct diffusion of ambient CO₂ from water across cell membranes.
C) active transport of bicarbonate into the leaf followed by conversion to CO₂.
D) excretion of carbonic anhydrase into the water,followed by uptake of the resulting CO₂.
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