Question

(i) What is meant by ‘reflex action’ ?

(ii) State whether the following are simple reflexes, conditioned reflexes, or neither of the two:

1. Sneezing. 2. Blushing. 3. Constriction of pupil.

4. Lifting up a book. 5. Knitting without looking.

6. Sudden application of brakes without thinking.

7. Blinking

8. Cleaning

9. Playing o n the Keyboard

10. Salivation when food is put in the mouth.

Answer 1

(i) The reflex action is an immediate short-lived response to a stimulus, brought about by the nervous system.

(ii) 1. Simple reflex

2. Simple reflex

3. Simple reflex

4. None

5. Conditioned reflex

6. Conditioned reflex

7. Blinking—simple reflex

8. Cleaning of table—voluntary action

9. Playing on keyboard—conditioned reflex

10. Salivation when food is put in the mouth —simple reflex