Choose the correct answers from the alternatives given :In which of the following plants metabolism would be hindered if leaves are coated with vaseline on their upper surface ?
In an experiment, four freshly plucked leaves (A - D) of a plant, such as those of China-Rose, were treated as follows :
(A) coated with vaseline on its upper surface.
(B) coated on the lower surface.
(C) coated on both surfaces.
(D) left uncoated.
All the four leaves A, B, C and D were left in a room for about 24 hours.
(i) Which leaf would become most limp ? Why ?
(ii) Which leaf would show least limping ? Why ?