Statement-I : Leaf surface is exposed when bulliform cells in leaves have absorbed water and turn turgid.
Statement-II : In leaf palisade parenchyma is on abaxial surface and spongy parenchyma is towards adaxial surface.
In the light of the above statements, choose the correct answer from the options given below :

NCERT CLASS-XI : Page No. 93.

In grasses, certain adaxial epidermal cells along the veins modify themselves into large, empty, colourless cells. These are called bulliform cells. When the bulliform cells in the leaves have absorbed water and are turgid, the leaf surface is exposed.

Mesophyll, which possesses chloroplasts and carry out photosynthesis, is made up of parenchyma. It has two types of cells – the palisade parenchyma and the spongy parenchyma. The adaxially placed palisade parenchyma is made up of elongated cells, which are arranged vertically and parallel to each other.