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Published byDortha Simmons Modified over 8 years ago
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Angiosperm Reproduction
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Female Parts Male Parts Anther contains… Pollen Grains (which contain pollen) Filament STAMEN Ovary contains… Ovules (which contain eggs) Stigma Style PISTIL or CARPEL
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MALE ANATOMY Filament- Extends and supports the anthers. Anther- Produce pollen grains, containing pollen (microgametophyte) Pollen- (microgametophyte) Produce sperm by meiosis Pollen can be spread (dispersed) by Brushing onto animals (pollinators) Wind or weather.
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FEMALE ANATOMY Stigma- Has sticky substance to “catch” pollen Style- Extends the stigma away from ovary to decrease chance of pollen contamination Ovary- Develop into fruit for seed dispersal Contain one or more ovules Ovule- Contain embryo sac (megametophyte) Produce eggs by meiosis May develop into seed after fertilization.
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Petal- Attract insects into the flower. May stimulate vision or smell Receptacle- Where flower attaches to the stalk. May become fruit after fertilization Flower Stalk- Holds the flower up from the plant Nectary- Where a sugary solution called nectar is held to attract insects. Not all flowers have one Sepal- Protect the flower while developing Plants with flowers are called ANGIOSPERMS
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Monocot Develop one cotyledon Examples: Lily, Iris, Tulip Dicot Develop two cotyledons Examples: Cherry, Daisy, Carrot The number of cotyledons present is one characteristic used by botanists to classify the angiosperms (flowering plants) A cotyledon is the part of the embryo within a seed that becomes the first leaves of a seedling.
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Sexual Reproduction in Plants Pollination: (Fertilization) 1.Pollen lands on stigma 2.Pollen tube grows through style 3.Sperm are released to fertilize egg in ovary After Fertilization: 4.Ovule becomes seed (containing the now fertilized egg) 4.Ovary ripens into fruit (containing the ovules/seeds)
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