1. Plant reproduction and how it works!
Plant sex! Wait…what?
Plant reproduction and how it works!

2. All Plants do it…

3. Structures for Plant Reproduction:
Cones
Flowers
Pollen
Ovules
Seeds

4. Cones Vs. Flowers
Cones - the seed bearing structure of non-flowering plants (gymnosperms)
Flowers - the seed bearing structure of flowering plants (angiosperms)

5. Gymnosperms vs. angiosperms reproduction

6. The angio-difference: Double internal fertilization

7. Pollen, Ovules and Seeds
Pollen – The male sex cell (sperm) is carried in a pollen grain
Ovule – The female sex cell (egg) is located in the ovary.
Seed – A structure that carries the embryo of a plant (after fertilization)

8. Functions of Seeds Protection -from drying out and disease
Nourishment – contain cotyledons (seed leaf) that supply organic nutrients
Dispersal – by wind, water, and animals
Delayed growth – do not germinate until conditions are favorable

9. Flowers – The Reproductive Structure
Male Part of the Flower
Female Part of the Flower

10. Warm-up: Mitosis vs meiosis: But where?
List at least five things you remember about mitosis and meiosis.
What type of cells does mitosis create? And meiosis?
Where do you think each process would occur in a flower?

11. Mitosis in plants happens in all of the other parts of the flower
Meiosis in plants happens in the Ovule (for the egg) and in the Anther (for the sperm)
Mitosis in plants happens in all of the other parts of the flower

12. Pollination Size and shape of the flower helps pollination to occur
Cross Pollination:
Self-pollination can also occur:
Pollen is released from the anther and is transferred to the stigma. A pollen tube forms and grows through the style. The pollen tube reaches an ovule within the ovary, where the sperm fertilizes the egg.

13. Pollination Leads to Fertilization:
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14. Fruits Structures in which seeds develop
Promote seed dispersal through the digestive track of animals

15. All Plants do it… Alternation of generations
Haploid Gametes =
(1n)
= Diploid Gametes
(2n)
Alternation of Generations is the process in which all plant life cycles include both haploid gametes and diploid gametes.

16. Alternation of generations
This allows the plant to grow from a zygote into a mature organism, while also creating both pollen and ovules.