Assertion: Medulla oblongata causes reflex actions like vomiting, coughing and sneezing. Reason: It has many nerve cells which control autonomic reflexes.
A
If both the assertion and the reason are true and the reason is the correct explanation of the assertion
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B
If both the assertion and the reason are true and the reason is not the correct explanation of the assertion
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C
If the assertion is true and the reason is false
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D
If both the assertion and the reason is false
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E
If the assertion is false but the reason is true
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Solution
The correct option is A If both the assertion and the reason are true and the reason is the correct explanation of the assertion Medulla oblongata consists of accumulation of nerve cells act as vital centres of many automatic reflexes like vomiting, coughing and sneezing.