Distinguish between angiosperms and Gymnosperms?

Angiosperms are seed producing flowering plants whose seeds are enclosed in the ovary whereas Gymnosperms are seed producing non-flowering plants whose seeds are naked.Angiosperms are seasonal whereas Gymnosperms are evergreen.Angiosperms possess flowers which enclose the reproductive structures whereas in Gymnosperms the reproductive structures are present in cones. Angiospermic flowers can be unisexual or bisexual but Gymnospermiccones are unisexual. Angiospermspossess cotyledons whereas Gymnosperms do not have cotyledons.Seeds are enclosed inside the ovary that is a fruit in Angiosperms whereas seeds in Gymnosperms are bare found on cones. Wood is hard in Angiospermswhereas wood is soft in Gymnosperms.Angiosperms are non-perennial whereas Gymnosperms are perennial.