Question

mention the basis of classifying the angiosperms into two subgroups, name them

Answer 1

angiosperms at classified into two based on number of cotlyedons present in them.plant having single seed called monocot and plant having two or more seed called dicots.
ex of monocot: paphiopedilum
ex of dicot: ipomoea.

Answer 2

Angiosperms can be divided into two categories named as
1. Monocotyledons
2. Dicotyledons
This classification system is based upon "seed plants". Monocotyledons were described years after dicotyledons. Monocotyledons have 34 families while dicotyledons have 165 families.
Monocotyledons have only one seed while dicotyledons have two seeds.