Question

Q:19 Assertion : Aerobic respiration involves the exchange of respiratory
gases twice. Reason: Exchange occurs from lungs to heart and then heart
to lung.
*
If both the assertion and the reason are true and the reason is a correct explanation
of the assertion
If both the assertion and reason are true but the reason is not a correct explanation of
the assertion
If the assertion is true but the reason is false
If both the assertion and reason are false
O If the assertion is false but reason is true​

Answer 1

Answer:

both assertion and reason are correct and reason is the correct explanation of assertion

Answer 2

Answer:

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Explanation:

If assertion is true but reason is false.