Literally meaning: “sperm vessel”
Origin: Anc Greek
αγγείο/aggio (=vessel, receptacle) > άγγος/aggos(=tube)
σπέρμα (=seed) > σπείρω/spearo (=disperse)
Angiosperms appeared during Jurassic period (203-135 million years ago). The term was coined by German botanist Paul Hermann (1646-1695) in 1690 including the class of Dicotyledones and Monocotyledones.
Angiosperm is any seed-bearing and flowering plant in which the ovules are enclosed in the ovary which develops into the fruit after fertilization. Angiosperms, except flowers, have true roots, stems and leaves and consist bigger group than gymnosperms, the other seed plant group.