Lesson 6 Notes.docx - Lesson 6 Notes Structure and Evolution of flowers Flowers evolved in Angiosperms Morphology o Complete flower All stamens=

Lesson 6 Notes.docx - Lesson 6 Notes Structure and...

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Lesson 6 Notes Structure and Evolution of flowers - Flowers evolved in Angiosperms - Morphology o Complete flower All stamens= androecium (male structures) All carpels= gynoecium (female structures) All petals= corolla (attracts pollinators) All sepals= calyx (protects the flower bud) o Incomplete Flower Flower Structure - Male o Anther: Microspores and pollen o Sepal: Sometimes attractive - Female o Stigma: Pollen Receptor - Andro=male Gyno= Female Ecium= House Trends in Floral Specialization/Symmetry - Fusion - Reduction - Radial Symmetry - Bilateral Symmetry Gamete Production - Alternation of generations o Diploid and Haploid generations o Pollen Grains Microgametophytes o Embryo Sac Megagametophytes Gametophytes - Embryo Sac o 8 nuclei o 7 cells - Pollen Grain Pollination - Self- Pollination
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o Offspring are more similar to parent generation o Ecologically Advantageous - Outcrossing o Separation of male and female structures o Monoecious: Separate male and female parts on the same plant o
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  • Fall '19
  • Pollination, Pollen, incomplete flower

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