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Announcements • Test Corrections: 12/6 – 12/16 • Take Biospheres Home • Biosphere Report DUE NEXT CLASS! Question of the Day Question: Describe vegetative reproduction. Answer: … … … Lab 6.1: Zebrina & Lab 6.2:Planaria Lab 13.2: Flowers & Vocabulary Sheet Unit 5 Vocabulary 5. petals- brightly colored leaves used to attract pollinators 4. sepals- specialized leaves that enclose a flower bud before it opens Unit 5 Vocabulary 6. stamen- male part of a flower 7. anther- produce pollen grains 8. filament- support anthers Unit 5 Vocabulary 9. pollen grains- carry sperm 10. sperm cell- male reproductive cell Pollen In Air: Magnified Pollen: Unit 5 Vocabulary 12. stigma- sticky female part used to capture pollen 15. style- narrow part of the carpel that supports the stigma 17. ovary- where ovules develop 18. ovules- structure containing an egg 14. carpel- a stigma, style, & ovary 11. pistil- all of the carpels together Lab 13.2: Flowers Lab 13.3: Fruits, Nuts, & Seeds & Vocabulary Sheet Pollen Dispersal • Animals – pollen is usually barbed or sticky – Mammals, birds, insects (bees, flies, etc.) • Wind – pollen is usually light & aerodynamic • Water – for plants that grow underwater Unit 5 Vocabulary 24. fertilization- the joining of sperm and egg 16. pollen tube- grows towards egg & contains two sperm nuclei Fertilization • • • • Pollen swells from moisture on stigma Pollen tube grows so that sperm can reach the egg Fastest growing cell type known Species must match Unit 5 Vocabulary 22. seed- plant embryo and food supply enclosed together in a protective seed coat 21. endosperm- energy-rich tissue that nourishes a seedling as it grows 23. fruit- energy-rich tissue that contains one or more seeds Seed Dispersal • Dispersal: movement away from an existing population • Animals – Birds: reliant on color when finding food – red, hot pink, orange. – Mammals: seeds pass through digestive system; may contain laxative – Insects: have excellent senses of smell or color vision or both Seed Dispersal • Wind – Usually light (low density) & aerodynamic – May have wings • Water – For plants that grow in or near large bodies of water (eg. coconut) – Low density: float – Must be somewhat waterproof Fruit: Matured Ovary • Fruit- matured ovary and other floral parts; used to be a flower 1 flower, 1 ovary 1 flower, many ovaries Nut: Matured Ovary • Nut- matured ovary and other floral parts with hard shell; used to be a flower