Biology
Which of the following is not a natural reflex action?
- Knee-jerk
- Blinking of eyes due to strong light
- Salivation at the sight of food
- Sneezing when any irritant enters the nose
Nervous System
ICSE 2020
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Answer
Salivation at the sight of food
Reason — Salivation at the sight of food is a conditioned reflex as our brain already knows the taste of food.
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