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Transcript
Four Types of Plants • Non-vascular • Vascular • Gynosperms • Angiosperms Nonvascular plants: Mosses • Characteristics • no water transport system • rhizoids used to anchor • spores for reproduction • no seeds Where must mosses live? “Peat Moss” Peat Bog Primitive Vascular Plants: Ferns • Characteristics • internal transport system • xylem/phloem & roots • swimming sperm • need water to reproduce • spores for reproduction • no seeds • First true roots, stems, leaves spores Where must ferns live? Ancient Tree Ferns Fossil fuels… I get it! Carboniferous forest – 290-350 mya Forests of ferns & mosses decayed into deposits of coal & oil Ferns - adaptations • See the first true • Roots • Stems • Leaves • Still considered primitive because ferns are still dependent on water for reproduction Gymnosperms (conifers) • Characteristics • internal transport • xylem/phloem, roots • seeds • “naked” seeds in cone (no fruit) • pollen • sperm that doesn’t have to swim Diversity in conifers Cones & “naked” seeds sporangium & pollen male male (pollen) cones female female cones pine embryo Flowering plants • Characteristics • internal transport system • xylem/phloem, roots • flower • specialized structure for sexual reproduction • pollen • sperm that doesn’t have to swim • seeds within fruit FLOWER: specialized structure found in angiosperms Flower • 4 rings of flower parts • sepals • petals • stamens Stigma Style Ovary Anther Stamen Filament • male • carpel • female Petal Ovule Sepal Carpel Identify the flower structures… Flower variations