BIOL 2P93 Lecture Notes - Lecture 5: Pollen Tube, Flower Flower, Megaspore
13 Jul 2016
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Document Summary
Angiosperm is derived from the greek angeion ( vessel ) and sperma ( seed ) They share many unique characteristics and are a monophyletic group. There are a number of evolutionary lines, some with few members, others with hundreds of thousands. There are two distinct classes of angiosperms, the moncotlyedoneae (monocots) and the eudicotyledonae (eudicots, formerly the dicots: monocots. They form a monophyletic group since they comprise all the descendants of a common ancestor. The largest family in this group by species are the orchids. Agriculturally the majority of biomass produced are monocots (i. e. the true grasses: rice, wheat, maize), pasture grasses, sugar cane, and bamboo o. Eudicots are derived from the term dicotyledons or dicots. Historically, dicots were the group of flowering plants having two cotyledons. Studies based on phylogenetic evidence suggest that the dicots are a monophyletic group.
