Final answer:
The incorrect pairing is osmolarity and baroreceptor; the correct type of receptor for sensing osmolarity is an osmoreceptor.
Step-by-step explanation:
The pairing that is NOT correct about sensory stimuli and the type of receptor is osmolarity; baroreceptor. Osmolarity is detected by osmoreceptors, which respond to the solute concentrations of body fluids, not baroreceptors which are involved in sensing changes in blood pressure. The correct pairings are pH and glucose with chemoreceptors that respond to chemical stimuli, muscle length/tension with mechanoreceptors that sense physical stimuli like pressure and tension, cell stretch with mechanoreceptors, and temperature with thermoreceptors that are sensitive to changes in temperature.