Which of the following is NOT a use of glucose in plants?

Transpiration is the process through which water evaporates from the surface of leaves, not a direct use of glucose. In plants, glucose serves several important functions. It is synthesized during photosynthesis and provides energy for respiration, aiding in the conversion of glucose into usable energy. Additionally, glucose is essential for making starch, which acts as a storage form of energy. It is also used in building proteins by providing amino acids through various metabolic pathways. Thus, the correct choice indicates that transpiration does not utilize glucose, as it is primarily related to the movement and loss of water rather than energy or metabolic processes involving glucose.