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Reproduction In Flowering Plants PowerPoint Presentation

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Reproduction In Flowering Plants Presentation Transcript

Slide 1 - Reproduction in Flowering Plants Mrs. Zemcik Living Environment
Slide 2 - Flower Sexual reproductive structure Produces egg and sperm Fertilization takes place inside the flower
Slide 3 - 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
Slide 4 - Pollination Transfer of mature pollen grains from the anther to the stigma -wind -insects -birds & other animals
Slide 5 - ppt slide no 5 content not found
Slide 6 - When a pollen grain lands on the stigma, it germinates and a pollen tube grows down through the style to an ovule (egg)
Slide 7 - 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)
Slide 8 - *Self pollination –pollen from same flower *Cross pollination – pollen from a different flower - more variation
Slide 9 - The ovary and zygote (fertilized ovule) develop and ripen. *The ovule forms the seed and the ovary forms the fruit. A fruit is a ripened ovary
Slide 10 - The plant embryo uses food stored in the cotyledon of the seed until it develops leaves for photosynthesis
Slide 11 - micropyle –opening in ovule where pollen tube attached, sperm entered hilum –scar where ovule attached to ovary radicle –embryonic root Seedling
Slide 12 - Epicotyl – grows above the cotyledons and gives rise to the leaves. Hypocotyl –below the point of attachment of the cotyledon, develops into the stem.
Slide 13 - ppt slide no 13 content not found
Slide 14 - Seed Germination
Slide 15 - ppt slide no 15 content not found
Slide 16 - This powerpoint was kindly donated to www.worldofteaching.com http://www.worldofteaching.com Is home to well over a thousand powerpoints submitted by teachers. This a free site. Please visit and I hope it will help in your teaching
 

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