Gustation give a taste
perception and olfactory is an insight of smell. In gustation, only four tastes
were recognized, namely sweet, salty, sour, and bitter. However, research of
the 20th century led to recognition of the fifth taste, umami that means delicious
taste or savory.
Meanwhile, olfaction or the sense of smell is a responsive stimulus
that contains bipolar sensory neurons that are located in a small region within
the superior nasal cavity.
If this is a true or false question, the answer is true. Olfaction and gustation are called chemical senses as they are being stimulated by chemicals. The molecules then interact with the receptors in order to produce the generator potential (olfaction) or the receptor potential (gustation).