Post on 01-Feb-2016
description
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.beStapelia – 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.