Question

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

Answer 1

Angiosperms are further classified in to two two subgroups on the basis of number of cotyledons.
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I) Monocots---These angiosperms have only one cotyledons.The other cotyledon is called scutellum in grass family.

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ii) Dicots -- These angiosperms have two cotyledons hence they are called dicotyledons.

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Answer 2

Amgiosperms are sub divided into two class :
1. Dicotyledonae- These plants have two cotyledons in their embryo and have tap root system .
e.g: Sunflower, china rose
2. Monocotyledonae- These plants have single cotyledon and they have adventitious root system.
e.g: Maize, Jowar