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Question
Which of the following is not a natural reflex action?
Options
Knee-jerk
Blinking of eyes due to strong light
Salivation at the sight of food
Sneezing when any irritant enters the nose
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Solution
Salivation at the sight of food
Explanation:
Salivation at the sight of food is a conditioned (learned) reflex that depends on past experience. The other options are natural (inborn) reflexes present since birth.
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