Assertion: Vascular bundle of dicot stem is described as open.
Reason: Dicot stem bundles have cambium between xylem and phloem.
Both assertion and reason are correct and reason explains the assertion.
Both assertion and reason are correct but reason does not explain the assertion.
Assertion is correct and reason is incorrect
Both assertion and reason are incorrect
Since cambium is present between xylem and phloem, the vascular bundles of dicot stem are described as open.