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