Assertion :Medulla oblongata causes reflex actions like vomiting, coughing and sneezing. Reason: It has many nerve cells which control autonomic reflexes

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is correct but Reason is incorrect.

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Both Assertion and Reason are incorrect.

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
The medulla oblongata is a cone shaped the neuronal mass of cells found in the hind brain. It controls involuntary movements of the body. It relays signals between spinal cord and thalamus of the brain. Medulla oblongata controls involuntary functions such as sneezing, breathing, heart rate, digestion, vomiting, etc. These movements are brought about by the function of nerve cells of the autonomic nervous system i.e autonomic reflexes. Autonomic nervous system is a part of the peripheral nervous system that controls involuntary responses.
Thus, the correct answer is option A.

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