WAEC - Biology (1995 - No. 21)
Which of the following statements is false?
Human sense of smell is easily fatigued
The skin can perceive the sensations of touch, pain, pressure and temperature
Taste buds and olfactory cells are active when wet as well as when dry
Sensory nerve endings receive stimuli and send to the central nervous system
Senses of smell and taste can be weakened by catarrh or blocked nose.
คำอธิบาย
For food to have taste, chemicals from the food must first dissolve in saliva. Once dissolved, the chemicals can be detected by receptors on taste buds. Therefore, if there is no saliva, you should not be able to taste anything.