Rajeev put a leaf he had just plucked, into a
beaker of warm water as shown. He noticed
bubbles coming out of the leaf. He noticed more
bubbles on the lower surface of leaf. Which of the
following is the correct explanation for this?
A Photosynthesis can take place on the lower surface of the leaf.
B There are more stomata on the lower surface of the leaf.
C The leaf is transporting sugar to the lower surface of the leaf.
D Carbon dioxide enters the leaf from the upper surface and oxygen comes out from the lower surface.
I know the answer.......YOU TELL