Are nuts dicotyledons?

Peanuts are not nuts; nor are they peas. They are legumes.

Many things that are called nuts actually aren't by the strict botanical definition. For example: almonds, Brazil nuts, cashews, macadamias, peanuts, pecans, pine nuts, pistachios and walnuts are all...

you are nutty to ask a question about nuts.

Any plant that has branches is dicotyledon If it doesn't have any branches then its monocotyledon

Not in Grape Nut Flakes, but I'm not too sure about actual Grape Nuts. I would go to the store and check the ingredients on the nutrition label on the side of the box. That would probably tell you.