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Question

(a) What is meant by reflex action?

(b) State whether the following are simple reflexes, conditioned reflexes or neither of the two.

(i) Sneezing - __________________

(ii) Blushing - ___________________

(iii) Contraction of eye pupil - _________________

(iv) Lifting up a book - _________________

(v) Knitting without looking - ____________________

(vi) Sudden application of brakes of the cycles on sighting an obstacle in front - ______________

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Solution

(a) Reflex action is an autonomic, quick and involuntary action in the body brought about by a stimulus.

(b)

(i) Sneezing - Simple reflexes

(ii) Blushing - Simple reflexes

(iii) Contraction of the eye pupil - Simple reflexes

(iv) Lifting up a book - Conditioned reflexes

(v) Knitting without looking - Conditioned reflexes

(vi) Sudden application of brakes of the cycles on sighting an obstacle in front - Conditioned reflexes


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