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Wordbank. Stigma Anther Pistil Stamen Ovule Sepal filament Petal Ovary Style Receptacle. Monday/Tuesday, February 3/4 th , 2013 February. Objective : Students can explain how a flower reproduces Focus Question: How can a flower reproduce by itself?

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Wordbank

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  1. Wordbank • Stigma • Anther • Pistil • Stamen • Ovule • Sepal • filament • Petal • Ovary • Style • Receptacle

  2. Monday/Tuesday, February 3/4th, 2013 February Objective: Students can explain how a flower reproduces Focus Question: How can a flower reproduce by itself? Standard:5f Students know the structures and processes by which flowering plants generate pollen, ovules, seeds, and fruits. Table of Contents:5.5 Flower Parts Homework: Due 2/5: Finish 5.5 Flower Parts and Energy Cycle Poster Agenda: • Do-Now • Stations

  3. Gametes = sex cells: Sperm and Egg • Male Flower Gamete = Pollen (flower sperm) • Female flower Gamete = Ovules (Flower eggs) • Pollen + Ovules = Seed • 50% DNA in pollen and 50% DNA in ovule

  4. Stations • Direct Instruction: Flower parts and practice • Group Stations: Finish Poster • Independent Station: Flower parts webquest

  5. Standard 1d Re-Test Word bank: Chloroplast and mitochondria Sun Energy/Cell Energy, Carbon Dioxide (CO2), Water (H20), Sugar, Oxygen

  6. What is the main function/purpose of the mitochondria? • What is the main function/purpose of the chloroplast?

  7. How do you think pollination occurs? • In 3 sentences, tell me exactly how you think pollination happens, from the pollen on the anther to the fertilized seed

  8. How does pollination happen? • The anther (the male reproductive part) creates pollen. • The pollen must transfer to the stigma (a female reproductive part) • The pollen tubes grow down the style (the stalk of the pistil) into the ovary • The pollen tubes reach the ovules in the ovary. • The ovules are like baby eggs • When the ovules are fertilized, they grow into seeds

  9. Stigma TPS • Why do you think the stigma is above the anthers?

  10. What’s the difference between the pistil and the stamen

  11. Which one do you think is better? Self-pollination or cross-pollination

  12. Cross pollination is better! • Every organism gets half their genes from their mother and the other half from their father. • Sometimes a gene is bad. Having 2 different sets of genes means your likely to have 1 good version of every gene. • If a mother has a bad gene for blood clotting, the father’s good gene could hide it. If the mother was the only one giving genes to the offspring, then the offspring would have the bad gene.

  13. Which flower is the male? How can you tell?

  14. What would happen to a plant population if a disease wiped out all insects in its habitat? • Many plants would die, especially those that need insects to pollinate them. The plants that survived would evolve, through natural selection to find new ways to pollinate. They would adapt, developing new features that help them pollinate with wind, birds, or other pollinators.

  15. How do you think each flower pollinates?

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