Angiosperm Reproduction

Female Parts Male Parts Anther contains… Pollen Grains (which contain pollen) Filament STAMEN Ovary contains… Ovules (which contain eggs) Stigma Style PISTIL or CARPEL

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.

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.

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

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.

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)