A . Which leaf dries first?
B. Which leaf dries last?
C. Which leaf does not show any change?
 

Dear student,

A) Leaf D will dry first because it is not covered by grease.Grease blocks the stomata are exposed, so they are susceptible to the transpiration.
B) Leaf A will dry last because is covered by the grease on both the sides. Grease blocks the stomatal pores, hence, do not show shrinking.
C) Leaf A will not show any change because it is covered by grease on both the sides. so, transpiration could not takes place in it.

Regards.