wiz-icon
MyQuestionIcon
MyQuestionIcon
4
You visited us 4 times! Enjoying our articles? Unlock Full Access!
Question

A reflex action is a quick involuntary response to stimulus. Which of the following is an example of both, unconditioned and conditioned reflex?

A
Knee Jerk reflex
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Secretion of saliva in response to the aroma of food
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
Sneezing reflex
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Contraction of the pupil in response to bright light
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C Secretion of saliva in response to the aroma of food
An unconditioned reflex is a reflex that is either inborn or has physiological maturation dependence. It is no based on learning. A conditioned reflex is the one which is based on learning. Saliva secretion is controlled by both unconditioned and conditioned reflexes.
Pavlov's experiment is used to understand this in detail.
On seeing food by the dog, the taste buds on its tongue stimulate receptors present in the brain that in turn stimulate the salivary glands to secrete saliva Hence it is an unconditioned reflex.
The food was served to the dog after ringing the bell every time. Hence the dog associated the sound of the bell with food and would salivate even when food is not served and only bell is rung. The dog developed this reflex action by learning. Hence it is also a conditioned reflex.
Thus the correct answer is option B.

flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon