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Plant Reproduction

Plant Reproduction. AP Biology Crosby High School. Flowers. Male gametophyte: pollen grain Female gametophyte: embryo sac Bisexual flower Unisexual flower Stamenate carpellate Monoecious Dioecious. Gametophyte Development. Male Microsporyte generates 4 microspores

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Plant Reproduction

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  1. Plant Reproduction AP Biology Crosby High School

  2. Flowers • Male gametophyte: pollen grain • Female gametophyte: embryo sac • Bisexual flower • Unisexual flower • Stamenate • carpellate • Monoecious • Dioecious

  3. Gametophyte Development • Male • Microsporyte generates 4 microspores • Microspore divides creating generative and tube cells • Two cells and wall make grain • Female • Megasporyte forms 4 megaspores • 1 megaspore divides 3 times • 1 egg and 2 synergids • 3 Antipodal cells • 2 polar nuclei

  4. Fertilization • Self-fertilization • Unisexual cannot self-fertilize • Bisexual flowers often mature at different times • Self-incompatability • Double fertilization

  5. Ovule Becomes a Seed • Endosperm Development • Embryo Development • Creation of Basal and Terminal cell • Basal ends becomes Suspensor • Terminal: spherical proembryo • Three primary meristems also form

  6. Mature Seed • Hypocotyl • Radicle • Epicotyl

  7. Embryo Development

  8. Gametophyte Development

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