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Which of the following characters is/are...

Which of the following characters is/are related to isobilateral leaf?
( a ) Stomata are present on both surfaces.
( b ) Mesophyll is differentiated into palisade and spongy parenchyma.
( c ) Sub-stomatal cavity is present below the stoma of the abaxial epidermis.

A

Only (a)

B

Only (c)

C

Only (a) and (c)

D

(a), (b) and (c)

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