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Flowers PowerPoint PPT Presentation

Flowers the reproductive structures of plants 4 parts of a plant Roots Stems Leaves Reproductive (includes flowers and fruits) Flowers have 4 different parts Sepals Petals Stamens Pistil Pedicel The flower stem Receptacle

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Flowers

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Flowers l.jpg

Flowers

the reproductive structures of plants


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4 parts of a plant

  • Roots

  • Stems

  • Leaves

  • Reproductive (includes flowers and fruits)


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Flowers have 4 different parts

  • Sepals

  • Petals

  • Stamens

  • Pistil


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Pedicel

  • The flower stem


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Receptacle

  • The place on the stem where floral organs attach and originate.


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Sepals

  • Usually green; leaflike structures that protect the flower, as it forms and emerges.


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  • Sometimes sepals are colorful


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Calyx

  • The group of sepals on a flower


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Petals

  • Located just inside the sepals

  • Leaf-like and often very colorful

  • Attract pollinators


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Corolla

  • The collection of petals on a flower


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Perianth

  • The sepals and the petals of a flower. (Not the reproductive parts.)


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Tepals

  • When there is no clear distinction between the sepals and the petals...they are called “tepals”.


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The reproductive parts

  • Found at the center of the flower


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Stamens

  • Male reproductive parts of a flower

  • Arranged around the female parts


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Anther

  • Part of the stamen

  • Produces and holds pollen


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Filament

  • Stalk that holds up the anther


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Pistil

  • The female part of the flower


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Stigma

  • Found at the end of the pistil

  • Has a sticky surface to catch pollen


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Style

  • The neck of the pistil


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Ovary

  • Part of the pistil that contains the ovules


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Ovule

  • The part of the flower in which the eggs are produced and seeds develop


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Complete flowers

  • Have all 4 basic parts:

  • Sepals, petals, stamens and pistil


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Incomplete flowers

  • Flowers that are missing one of the four basic parts


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Perfect Flowers

  • Flowers that have both male and female parts


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Imperfect flowers

  • Flowers that lack one of the sex structures


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