I think the answer is DNA
They are monocotyledons and dicotyledons.
the angiosperms can be divided in two categories.
i hope that helps.
Dichotomous Keys are used to find out what type of animal,plant,fungi,prokaryote,eukaryote,or bacteria an organism is. A branching diagram is used to find what domain,kingdom,phylum,class,order,family,genus,species an organism belongs in.
