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Download Introduction to Plants: Evolution, Characteristics and Life Cycle
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Flowering Plants BIOL 1407 Flowering Plants • Seed plants • Ovules are enclosed in an ovary • Ovary fruit around seeds • Photo Credit: BIOL 1407 student, Austin Nature Center field trip, 2006 Flowers • Reproductive Structures – Attract animal pollinators • Photo Credit: Pam Wolfe, Georgetown River Walk 2008 Flowers • Female structures = megasporophylls • Male structures = microsporophylls • Photo Credit: Pam Wolfe, Zilker Botanical Gardens 2008 Flowers • Reproductive structures surrounded by modified leaves • Photo Credit: Pam Wolfe, Zilker Botanical Gardens 2008 Photo Credit: ACC Field Biology Student, 2005 Photo Credit: Courtesy of Luc Viatour @ http://www.lucnix.be Photo Credit: ACC Field Biology Student, 2005 Flower Pollination • Animal Pollinators – – – – Insects Bats Birds Other mammals (sugar gliders, mouse lemurs) • Wind Pollination • Water Pollination • Photo Credit: Courtesy of Luc Viatour @ http://www.lucnix.be Photo Credit: Butterfly – Courtesy of Luc Viatour @ http://www.lucnix.be Stapelia – Courtesy of ChasMTx @ http://www.ubcbotanicalgarden.org/potd/2005/11/stapelia_gigantea.php Fruits • Mature ovary • Ovary forms wall around seeds • Photo Credit: Courtesy of Luc Viatour @ http://www.lucnix.be Photo Credit: Courtesy of Luc Viatour @ http://www.lucnix.be Photo Credit: Courtesy of Luc Viatour @ http://www.lucnix.be Seed Dispersal • Seed Dispersal – – – – • Animal dispersal Wind dispersal Water dispersal Mechanical dispersal Photo Credit: Mexican buckeye fruit, BIOL 1407 Student, Austin Nature Center field trip 2006 Photo Credit: Courtesy of Luc Viatour @ http://www.lucnix.be Photo Credit: Blue Tit Photo – Courtesy of Luc Viatour @ http://www.lucnix.be • • • • Pollination Pollen germination Pollen tube growth Double fertilization Angiosperm Seeds • Zygote Embryo • Triploid cell Endosperm (food supply) • Integuments Seed coat Corn Seeds Bean Seeds Question: Where is the endosperm? Cotyledon stays within kernel nutrients from endosperm to seedling Evolution Basal Angiosperms Monocots Magnoliids Eudicots Photo Credits: ACC Field Biology Student, 2005 The End Unless otherwise specified, all images in this presentation came from: Campbell, et al. 2008. Biology, 8th ed. Pearson Benjamin Cummings.
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