Kingdom Plants Domain Eukarya Domain Eubacteria AP Biology
Kingdom: Plants Domain Eukarya Domain Eubacteria AP Biology Domain Archaea Domain Eukarya 2007 -2008 Common ancestor
Evolution of Land Plants § 500 mya land plants evolved u special adaptations for life on dry land § _________________________________ w ____________________________ § _________________ AP Biology w ______________
Plant Evolution conifers AP Biology colonization of land Ancestral Protist conifers
Animal life cycle diploid multicellular individual 2 n haploid unicellular gametes 1 n AP Biology
Plant life cycle diploid multicellular individual 2 n gametes 1 n spores 1 n haploid unicellular gametes 1 n AP Biology
Bryophytes: 1 st land plants § _________________ u u vascular system? haploid § ______________ § no water transport system § no true roots dominant stage? § ______________ Where must § mosses live? ______________ § fuzzy moss plant you are familiar with is haploid u reproduction? § ______________ w flagellated § spores AP Biology w sprout to form gametophyte diploid
Pteridophytes: 1 st vascular plants diploid § ____________ vascular system? § _____________ § water transport system § xylem, phloem, roots, leaves u dominant stage? Where must § _____________ ferns live? haploid § _____________ u reproduction? § _____________ w flagellated § spores w sprout to form gametophyte u AP Biology
Alternation of generations § Fern gametophyte (1 n) u _________: male & female gamete production on same plant archegonia antheridia AP Biology
Alternation of generations diploid produces male & female gametes archegonia antheridia AP Biology haploid
First seed plants: Gymnosperm § Gymnosperm: conifers u vascular system? § ______________ w xylem, phloem, roots, leaves dominant stage? § ___________________________ w reduction of gametophyte protects delicate egg & Where can embryo in protective sporophyte conifers live? w protected from drought & UV radiation § __________: male vs. female gametophytes u reproduction? § ______________ w naked seeds (no fruit) § ______________ w contain male gametophyte AP Biology u
Cones & naked seeds AP Biology
sporangium & pollen male (pollen) cones female AP Biology cones pine embryo
First flowering plants § Angiosperm: flowering plants u vascular system? § ______________ u dominant stage? § ___________________________ w protects egg & embryo § ___________: male vs. female gametophytes u AP Biology reproduction? § ______________________________ ◆___________________________ § _______________ ◆ contain male gametophyte
Angiosperm life cycle male gametophyte = pollen grain (haploid) ______ ______ sperm nuclei travel down pollen tube _______ female gametophyte = ovary sac (haploid) _______ double fertilization AP Biology _______ new sporophyte in seed (diploid)
Flower § Modified shoot with 4 rings of modified leaves ______ Stamen u ____________ u Stigma Style Ovary Anther Carpel Filament § male u ______ § female sepals petals stamens Petal Ovule Sepal AP Biology adaptations through mutations carpel
Seed & Plant embryo § Seed offers… endosperm u u ______________ ______________ cotyledons = “seed” leaves, first leaves of new plant AP Biology (3 n) cotyledons embryo (2 n) seed coat
Monocots & dicots § Angiosperm are divide into 2 classes u ____________ § _____________ § leaves with network of veins § woody plants, trees, shrubs, beans u ____________ § _____________ § leaves with parallel veins § grasses, palms, lilies AP Biology
AP Biology
Any Questions? ? AP Biology
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