Which of the following actions are reflex actions?

1.Movement of the diaphragm during respiration
2.Coughing
3.Yawning
4.Sneezing
5.Removal of hand on being touched by hot object

A. II and v only

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B. III,IV and V only

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C. IV and V only

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D. I,II,III,IV and V

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Solution

The correct option is A A. II and v only
Reflex action is an involuntary action and it is a sudden reaction against the stimulus. e.g. removal of hand on being touched by hot or insertion of a pin in a skin, coughing, closing of the eyelid when any object enters in the eye
But Movement of the diaphragm during respiration is due to movement of Ribs muscles and Yawning and sneezing are involuntary actions not reflex actions.
So, the correct answer is 'Coughing and removal of hand on being touched by hot object'

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Match the following:

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(II)

C H_{3} C H_{2} O H + H C l \to

(III)

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Which of the following actions are reflex actions?1.Movement of the diaphragm during respiration2.Coughing3.Yawning4.Sneezing5.Removal of hand on being touched by hot object

Which of the following actions are reflex actions?

1.Movement of the diaphragm during respiration
2.Coughing
3.Yawning
4.Sneezing
5.Removal of hand on being touched by hot object