Question

mention the three systems of classification of angiosperms​

Answer 1

The dicotyledons were divided into 3 Divisions (Polypetalae, Gamopetalae and Monochlamydeae) and 14 series. Each series again divided into cohorts (modern orders) and cohorts into orders (modern families). 7. The authors did not mention anything about the origin of the angiosperms.