Given below are two statements : 
Statement I : Bulliform cells are present on the adaxial epidermis of a grass leaf.
Statement II : Mesophyll is not differentiated into palisade and spongy parenchyma in grass leaf.
In the light of the above statements, choose the correct answer from the options given below :

Statement I is true. Bulliform cells are specialized cells found on the adaxial (upper) epidermis of grass leaves. These cells are large, thin-walled, and filled with water, which allows them to change shape rapidly in response to changes in turgor pressure. The movement of bulliform cells can cause the leaf to roll or fold, helping to reduce water loss through transpiration and regulate leaf temperature.

Statement II is also true. Mesophyll is not differentiated into palisade and spongy parenchyma in grass leaf as it is an isobilateral leaf.