Chapter38 Plants Reproduction and Development

Chapter38 Plants Reproduction and Development - enclose...

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Plants: Plants: Reproduction Reproduction and development and development Sexual reproduction is the premier reproductive mode of flowering plant life cycles
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Outline Outline 1. Key concepts 2. Flower structure 3. Development of seeds and fruits 4. Key terms 5. Conclusions
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Key Concepts: Key Concepts: 1. Sexual reproduction is the premier reproductive mode of flowering plant life cycles 2. Sexual reproduction of flowering plants involves the formation of spores and gametes 3. After sperm fertilize eggs, seeds develop 4. While seeds are developing, tissues of the ovary mature into fruits
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Flower structure Flower structure Flower structure : Whorls of modified leaves A. Sepals – leaf-like, green, small, in monocots often look like petals. B. Petals – colored and fragrant, advertising the location of the flower. C. Stamens (Male reproductive structure): Anther (produces pollen), Filaments (support) D. Carpels (Female reproductive structure) Stigma (sticky for catching pollen) Style (support), Ovary (for egg development)
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Components of Flowers Components of Flowers Stamens Carpels Sepals Petals
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Unformatted text preview: enclose reproduction parts Location of Floral Parts Location of Floral Parts in a Rose in a Rose Development of Development of seeds and fruits seeds and fruits Development of seeds inside ovary, ovules when mature will become seeds. Fruit development A. Wall of the ovary develops into fruit B. Fruit aids in the dispersal of the seed some fruits consumed, others carried by wind Flower Flower Lily Double Double Fertilization Fertilization Life Cycle Development of seeds and Development of seeds and fruits fruits Structure of a Structure of a Fruit Seed Sepal Petal Stamen Carpel Ovary Pollination Stigma Style Ovule Anther filament In Conclusion In Conclusion 1. Sexual reproduction is the main reproductive mode of a flowering plant life cycle 2. Flowers have sepals, petals, one or more stamens, and carpels, and most or all are attached to a receptacle 3. At double fertilization, one sperm nucleus fuses with an egg nucleus and forms a diploid zygote 4. While the seeds forms, ovaries develop into fruits...
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This note was uploaded on 05/05/2008 for the course BIO 52010 taught by Professor Zhao during the Fall '07 term at University of Texas at Austin.

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Chapter38 Plants Reproduction and Development - enclose...

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