The upcoming discussion will update you about the difference between monocot and dicots. a. Number of Cotyledons: The actual basis for distinguishing the two classes of angiosperms is the number of cotyledons found in the embryo, and is the source of the names Monocotyledonae (one cotyledon) and Dicotyledonae (two cotyledons). b. Venation: In monocots, there […]
Difference Between Monocot and Dicots
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Origin of Monocots: 7 Hypotheses
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The following points highlight the seven hypotheses of origin of monocots. 1. According to Engler and his associates, Isoetales, Ophioglossales and a few other pteridophytes are ancestors to monocots. The herbaceous monocots have been considered to be more primitive than woody dicotyledons by them. However, this view is contradicted by the fact that, the woody […]
3 Main Lines of Evolution in Angiosperms
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The following points highlight the three main lines of evolution in angiosperms. Angiosperm: Evolution # 1. The First Line: I. It consists of Rhoeadales, Sarraceniales, Parietales, Malvales, Geraniales, Sapindales, Rhamnales and some Tubiferales. In this case the hypogynous condition remained unchanged. II. Labiatae is the most advanced family of this line. It is characterized by […]
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