Flowering Plants BIOL 1407 Flowering Plants Seed plants

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 Chas. MTx @ 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, 8 th ed. Pearson Benjamin Cummings.