Reproduction in Flowering Plants

Reproduction in Flowering Plants - Reproduction in...

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Unformatted text preview: Reproduction in Flowering Plants Mrs. Zemcik Living Environment Flower • Sexual reproductive structure • Produces egg and sperm • Fertilization takes place inside the flower Pistil *Stigma –top of the pistil, Sticky surface for pollen to stick to *Style – connects the stigma to the ovary *Ovary –contains ovules ( eggs) Stamen *Anther – produces sperm nuclei by meiosis. Sperm nuclei are enclosed by pollen grains. *Filament – holds the anther up Female reproductive organ Male reproductive organ Pollination • Transfer of mature pollen grains from the anther to the stigma-wind-insects-birds & other animals • When a pollen grain lands on the stigma , it germinates and a pollen tube grows down through the style to an ovule (egg) Fertilization • The sperm travels through the pollen tube to the ovule. The sperm & egg fuse forming the zygote (fertilized egg) –this grows into the plant embryo (cells grow by mitosis) * Self pollination –pollen from same flower *Cross pollination – pollen from a different flower- more variation •...
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This note was uploaded on 11/07/2011 for the course BIOLOGY 100 taught by Professor Staff during the Winter '08 term at BYU.

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Reproduction in Flowering Plants - Reproduction in...

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