1123 - November 23, 2011 Lecture 6 To be covered in todays...

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November 23, 2011 Lecture 6 To be covered in todays lecture coniferophyta life cycle (representative of the gymnosperms) introduction to the angiosperms shared derived characters of the angiosperms evolutionary relationships among angiosperms evolution of flowers sex among the angiosperms: reproductive cycle Flowering plants evolved during the Cretaceous period (~145 mya) general features of the Anthophyta flowers fruits endosperm (3n) formed following double fertilization animal pollination a flower is a bisexual strobilis (with both male and female gametophytes) that (often) promotes animal pollination flowers are generally composed of four whorls 1. a stigma, style and ovary 2. anthers (stamen) 3. corolla 4. calyx woody magnoliids are “basal angiosperms”: Order Magnoliidae magnolia fruit (multiple, one seeded carpels) with seeds carpels are the building blocks of fruits (more on this later) water lilies and other members of the Nympheales are also “basal angiosperms”
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This note was uploaded on 12/07/2011 for the course EEMB 3 taught by Professor Carlson during the Fall '08 term at UCSB.

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1123 - November 23, 2011 Lecture 6 To be covered in todays...

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