Answer: Cut the stem and if the vascular bundles are scattered in the stem, it is a monocot.
Step-by-step explanation:
The plant is whether monocot or dicot can be identified by the cross-section of the stem if leaves, flowers, fruits or seeds are not available.
In the cross-section of the monocot stem, the vascular bundles are scattered, without following a definite arrangement, whereas the dicot stem, will have the vascular bundles that have a definite shape, aligned in the form of rings.
In the case of monocot stem the bundle sheath is present whereas in case of dicot stem the bundle sheet is absent.