Which of the following is NOT true about plant transpiration?
a. Transpiration relies on adhesion of water molecules to cell walls
b. Transpiration is absent or less rapid in drought conditions
c. Transpiration relies on the evaporation of water from leaves to generate force through surface tension
d. Transpiration relies on cohesion of water molecules to one another
e. Plants use energy from photosynthesis to pump water from roots to leaves