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Flower Reproduction

Flower Reproduction. Structure Meets Function How do perfect flowers avoid self-pollination?. Students will be able to:. Recognize the processes that allow organisms to reproduce sexually. Identify the role of a flower in plant sexual reproduction.

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Flower Reproduction

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  1. Flower Reproduction Structure Meets Function How do perfect flowers avoid self-pollination?

  2. Students will be able to: • Recognize the processes that allow organisms to reproduce sexually. • Identify the role of a flower in plant sexual reproduction. • Explain the mechanisms flowers have to avoid self-pollination.

  3. Sexual Reproduction • The process that allows the union of gametes from two different individuals.

  4. Major cellular processes • Meiosis: Cell division which produces haploid (1N cells) N=number of chromosomes • Fertilization: Union of gametes to produce a zygote (2N)

  5. Why sex? • Mutation is the ultimate source of genetic variation. • Sex shuffles up combinations of mutations!

  6. Flowers aid in sexual reproduction

  7. Fertilization in a flower

  8. Lab Activity • How does a plant avoid self-pollination? • You will observe the structure of a perfect flower. • You will analyze how the structure allows for the function of cross-pollination (avoiding self-pollination). Questions to ponder: • Does timing prevent self-fertilization? • Do the male and female structures prevent accidental self-fertilizaiton?

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