· Eudicots have two cotyledons; monocots have one cotyledon

· Eudicots flower parts in four or parts; monocots flower parts in three.

· Eudicots leaf veins are netlike array; monocots leaf veins run parallel

· Eudicots pollen grains with three pores; monocots pollen grains with one pore

Though a member of the Mesangiospermae group, Carambola (Starfruit) are not Monocotyledons (monocots), but are actually Eudicotyledons (Eudicots).

A palaeodicot is a group of dicotyledons which evolved prior to the divergence between the monocots and the eudicots.

Sesame comes under Eudicots, so yes, it is a Dicot.

Yes, Penstemon is a dicotyledonous plant. It is classified under Eudicots.