Which of the following sense organs responds to chemical stimuli?
a. eyes
c. ears
b. taste buds
d. pain receptors

The correct answer in this question is letter B. Taste buds that are located at the tongue recognize some dissolved chemicals from the food for taste perception. Examples are hydrogen ions giving off sour taste, carbohydrates for sweet taste, magnesium ions give off bitter taste, sodium ions for salty taste and monosodium glutamate for umami taste.

The junction point is a synapse. Axon is the long arm of a neuron, and dendrons are the smaller segments.