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CHAPTER 30 PLANT
DIVERSITY II: THE EVOLUTION OF SEED PLANTS
Seed
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Moss leaf cross section
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Change in Dominance of Generations
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Ovule to Seed
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Winged seed of a White
Pine
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Division GinkgophytaGinkgo Treea “living fossil” only surviving species of a once large Division
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Division Ginkgophyta Ginkgo Tree
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Division Ginkgophyta
Ginkgo Tree
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Division Ginkgophyta Ginkgo Tree Male
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Division Ginkgophyta Ginkgo Tree Female
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Division Ginkgophyta Ginkgo Tree Sperm
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Division Cycadophyta-
Cycads
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Division Cycadophyta-Cycads Cone
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Welsitschia
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Gnetum
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Ephedra
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Division Coniferophyta
Douglas Fir
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Division Coniferophyta
Sequoia
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Division Coniferophyta
Sequoia
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Division Coniferophyta Cypress
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Division Coniferophyta Pacific Yew
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Division Coniferophyta Juniper
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Division Coniferophyta Pine farm
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Division Coniferophyta Wollemia pine
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Division Coniferophyta
Bristle cone pine
Oldest living organism
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Pollen Cones
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Pollen Cone
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Pollen grains
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Immature seed cones
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Seed Cones
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Seed cones
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Megasporangium
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Pollen sacs - Microsoprangium
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Pollen grain
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Life cycle of a pine tree
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Life cycle of a pine tree
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Pine seed and embryo
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Division Anthophyta angiosperms
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Division Anthophyta angiosperms-water lily
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Division Anthophyta angiosperms-Star anise
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Division Anthophyta
angiosperms-Orchid
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Division Anthophyta angiosperms California Poppy
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Tracheids are more primitive than vessel elements; ferns only have tracheids; gymnosperms have both but angiosperms have the most vessel elements.
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Division Anthophyta Angiosperms
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