Flower

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flower structure for student

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Flower

  1. 1. Basic Flower Structure stigma style ovary locule ovule carpel gynoecium pollen anther filament stamen androecium petal corolla perianth sepal calyx receptacle pedicel Perianth is complete Flower is perfect Flower is monoecious
  2. 2. Some Example Stories: Perfect Flowers: Pea exclusively self-pollinating Hibiscus self-pollinating if not crossed Cherry self-incompatible only outcrosses Imperfect Flowers: Begonia unisexual but monoecious Holly unisexual and dioecious Variable: Cucumber male, perfect, female, parthenocarpic
  3. 3. Basic Flower Structure stigma style ovary locule ovule carpel gynoecium pollen anther filament stamen androecium petal corolla perianth sepal calyx receptacle pedicel Perianth is complete Flower is perfect Flower is monoecious superior Flower is hypogynous Pistil is simple
  4. 4. Ovary Superior Flower Hypogynous Flower Perigynous Flower Epigynous Ovary Inferior Ovary Half-Superior Ovary Half-Inferior
  5. 5. Ranunculus acris - buttercup Flower Structure - review
  6. 6. Basic Flower Structure stigma style ovary locule ovule carpel gynoecium pollen anther filament stamen androecium petal corolla perianth sepal calyx receptacle pedicel Perianth is complete Flower is perfect Flower is monoecious superior Flower is hypogynous Pistil is simple This longitudinal section view does not allow us to consider symmetry
  7. 7. Symmetry: *=radial †=bilateral Flower Formula: Symbol Sequence to Diagram Flower Number of Parts per Whorl: <ul><li>sepals in calyx </li></ul>Fusion within whorl: curved line over number Fusion between whorls: square bracket below numbers Attachment of flower parts relative to ovary: horizontal line * * 5, 5,  , 5 * 5, * 5, 5,  , * 5, 5, <ul><li>petals in corolla </li></ul><ul><li>stamens in androecium </li></ul><ul><li>carpels in gynoecium </li></ul>
  8. 8. Ovary Superior Flower Hypogynous Flower Perigynous Flower Epigynous Ovary Inferior Ovary Half-Superior Ovary Half-Inferior 1 1 1

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