A) epidermis as dissolved \[C{{O}_{2}}\]
B) epidermis as carbonates only
C) epidermis as bicarbonates only
D) both [b] and [c]
Correct Answer: D
Solution :
In submerged hydrophytes (plants which remain completely dipped in water) \[C{{O}_{2}}\]enters through epidermis in form of carbonates and bicarbonates. In land plants \[C{{O}_{2}}\] is obtained from the atmosphere through the stomata.
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