Assertion: Potato has stem tubers.
Reason: It has obliquely growing underground modified branches with swollen apices.
Assertion and reason are correct and reason explains the assertion.
Assertion and reason are correct and reason does not explain the assertion.
Assertion is correct and reason is incorrect.
Both assertion and reason are wrong.
Potato has stem tubers as its underground modified stems which are obliquely growing underground branches with swollen apices.