Plant Reproduction Flowers, Fruits, and Seeds

1. Plant ReproductionFlowers, Fruits, and Seeds Take Notes on your Flower Anatomy Lab Handout

2. Angiosperms • Reproductive parts are contained in the FLOWER

3. Flower Parts Sepal – leaf-like appendages that protect the flower bud Petal – colorful structures that attract pollinators Anther – forms pollen (male gamete) Stigma – Sticky top that will catch pollen Ovule - eggs

4. Flower Parts Filament – Holds up the anther Style – Curved neck that connects stigma and ovary Pollen – male gamete Stamen – male reproductive organ Flower – reproductive organ of the plant Add These: Pistil(aka carpal)– female reproductive organ Ovary– Base of organ that contains ovules (eggs), ovary will develop into fruit, eggs will become seeds

5. Flower Parts STIGMA ANTHER STYLE STAMEN FILAMENT PISTIL PETALS (COROLLA) EGG Ovule OVARY SEPALS (CALYX)

6. Pollination/Fertilization • Pollination – when pollen (sperm) is transferred from an anther to a stigma (can be from the same plant – self-pollination) • Fertilization – when pollen on the stigma enters the ovary and combines with the ovule (egg)

8. Pollinators 3. Flies – like rotting meat smell • Honeybees – need a • landing platform • 2. Night-flying moths – need white, • very fragrant flowers

9. Pollinators 4. Hummingbirds – like bright colored (red or orange), tube-shaped flowers 5. Bats – like sour, musty odors (Banana tree) 6. Wind Light weight flowers, No particular color or scent.

10. Seeds and Fruits

11. Fruit Formation • After the seed is fertilized, the ovary either becomes fleshy (like a fruit) or hard (as in a nut).

12. Seed Dispersal • Fruit has propellers – dispersed by wind • Burrs, hooks – animal fur • Tasty fruit – digestive tract of animals

13. Structure of FlowersVascular

14. Seed Development

15. Seeds

16. Fruit Development As angiosperm seeds mature, the ovary walls thicken to form a fruit that encloses the seeds that developed from the ovules.

17. Fruit Structure

18. Types of Fruits Pepo Pome Drupe Berry Achene Hesperidium Hip Caryopsis Capsule Legume Multiple Accessory Nut Follicle Samara Schizocarp Silique

20. Animal Pollination & Dispersal

21. Wind Pollination & Dispersal

22. Animal Pollination

23. Seed Germination Dicot Monocot

24. Peanut Flower Plant Propagation & Agriculture • Vegetative reproduction includes the production of new plants from horizontal stems, cuttings, leaves, plantlets, and underground roots. • Horticulturists use plant propagation to make many identical copies of a plant or to produce offspring from seedless plants. • Most of the people of the world depend on a few crop plants, such as wheat, rice, and corn, for the bulk of their food supply.

25. Okra

26. Peach

27. Flower Lab Clean-up • Person 1 • Rinse the slide and coverslip off and place back on paper towel on back table • Put the razorblade back in the cardboard and hand it to me • Throw away the flower remains • Person 2 • Put away the compound microscope • Person 3 • Put away the stereroscope

28. Homework • Study for test • Unit 9 Review Packet – due on test day • Flower lab – due on test day • Plant diagrams – due on test day