Biology 24.1
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Biology 24.1 Presentation Transcript

  • 1. Ch. 24-1 Reproduction With Cones and Flowers
    Ch. 24 Reproduction of Seed Plants
  • 2. Pollen Cone
    Cone in gymnosperms that produces male gametophytes in the form of pollen grains
  • 3. Seed Cone
    Cone that produces female gametophytes
  • 4. Ovule
    Structure in seed cones in which female gametophytes develop
  • 5. Pollen Tube
    Structure grown y a pollen grain; contains two haploid sperm nuclei
  • 6. Sepal
    Outermost circle of flower parts that encloses a bud before it opens and protects the flower while it is developing
  • 7. Petal
    Brightly colored structure just inside the sepals; attracts insects and other pollinators to a flower
  • 8. Stamen
    Male part of the flower; made up of an anther and a filament
  • 9. Filament
    Long thin structure that supports an anther
  • 10. Anther
    Flower structure in which haploid male gametophytes are produced
  • 11. Carpel
    Innermost part of a flower that produces the female gametophytes
  • 12. Ovary
    In a flower structure that contains one or more ovules from which female gametophytes are produced
  • 13. Style
    Narrow stalk of the carpel in a flower
  • 14. Stigma
    Sticky portion at the top of the style where pollen grains frequently land
  • 15. Embryo Sac
    Female gametophyte within the ovule of a flowering plant
  • 16. Endosperm
    Food-rich tissue that nourishes a seedling as it grows
  • 17. Double Fertilization
    Fertilization in angiosperms, in which two distinct fertilization events take place between the male and female gametophytes.
  • 18. Key Concepts
    Reproduction in gymnosperms takes place in cones, which are produced by a mature sporophyte plant.
  • 19. Key Concepts
    Flowers are reproductive organs that are composed of four kinds of specialized leaves: sepals, petals, stamens, and carples.
  • 20. Key Concepts
    Reproduction in angiosperms takes place within the flower. Following pollination and fertilization, the seeds develop inside protective structures.
  • 21. Key Concepts
    Most gymnosperms and some angiosperms are wind pollinated whereas most angiosperms pollinated by animals