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Section 8-4

Section 8-4. Reproduction in Seed Plants. Focus On:. Parts of a seed Pollination, Fertilization, Germination. Angiosperms & Gymnosperms. Section 8-4 : Reproduction in Seed Plants. I. The evolutionary leap for seed plants: A. Two leaps that make plants ready for life on

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Section 8-4

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  1. Section 8-4 Reproduction in Seed Plants Focus On: • Parts of a seed • Pollination, Fertilization, Germination. • Angiosperms & Gymnosperms

  2. Section 8-4: Reproduction in Seed Plants I. The evolutionary leap for seed plants: A. Two leaps that make plants ready for life on land are: 1) _______________________________ 2) _______________________________ Do not need water to reproduce Have a seed coat for protection

  3. Section 8-4: Reproduction in Seed Plants II. Fertilization in Seed Plants: A. The reproductive structures of seed plants are known as _________and _________. B. Female and Male Reproductive Parts: The female cones and flower parts have what is called an _____________. This structure: ________________________ The male cones and flower parts have what is called ______________. This structure: _________________________ C. The the transfer of pollen to the ovule is called: _______________________. cones flowers ovule contains one egg cell pollen is the male sex cell. pollination

  4. Section 8-4: Reproduction in Seed Plants D. Two types of seeds can be produced: 1) angiosperms: ____________________ ________________________________ example:________________ 2) gymnosperms:___________________ ________________________________ example:________________ Plants that have seeds protected by a seed coat. Lima bean Plants whose seeds are naked – not covered. Pine cone

  5. Section 8-4: Reproduction in Seed Plants III. Seeds A. The basic seed structure consists of: ____________________________ __________________. B. The seed structures and their function: 1) Seed Coat: ______________________ ________________________________ 2) Cotyledon: ______________________ ________________________________ 3) Embryo: ________________________ ______________________________ A seed coat, a young plant, & stored food. The protective cover for the seed. “Shell-like” Stored food for the Embryo (young plant). The young/baby plant. As it grows it is called germination.

  6. Section 8-4: Reproduction in Seed Plants Epycotyl Hypocotyl Radical 4) Hypocotyl: ________________________ 5) Epycotyl: _________________________ 6) Radical:___________________________ 7) Hilum:____________________________ Undeveloped stem Undeveloped leaf Undeveloped root Structure that absorbs water. Germinating Seed

  7. Section 8-4: Reproduction in Seed Plants • Seed Dispersal: • A. Seeds need to find a place to grow, so many • of them have to travel. Since seeds cannot • walk they need ways to carry them. • Here are some ways seeds can be carried….

  8. Section 8-4: Reproduction in Seed Plants 1) Carried by wind

  9. Section 8-4: Reproduction in Seed Plants 2) Carried by water

  10. Section 8-4: Reproduction in Seed Plants 3) Carried by animals

  11. Section 8-4: Gymnosperms & Angiosperms V. Gymnosperms: The Naked Seed A. There are FOUR phyla of Gymnosperms: Phyla: Example: 1) _____________ _________________ 2) _____________ _________________ 3) _____________ _________________ 4) _____________ _________________ Conifers Redwood Cycads Palm Trees Ginkgoes Maiden Hairs Gnetophytes Tropical Vines

  12. Section 9-3: Gymnosperms & Angiosperms • The largest group of gymnosperms are the • ________________. • The word conifer actually means: ______________________. • VI. Angiosperms: The Coated Seed • A. Angiosperms: _____________________ • _______________________________ • Angiosperms can be found all over the world, even where it is cold. Conifers Cone-bearer Make up the largest group of plants–they vary greatly.

  13. Section 9-3: Gymnosperms & Angiosperms • Angiosperms are the flower producers. • Flowers are: ________________________ • ___________________________________ • _________________________________ • C.The general structures and their functions in flowers: • 1) sepals: __________________________ • _________________________________ • 2) petals: _________________________ • _________________________________ The structures that have the reproductive organs in angio-sperms. Support and protect the base of the flower. Used to attract organisms for pollination. Also can protect.

  14. Petals Sepals Parts of a Flower

  15. Reviewing this Section: Germination $ How has reproduction in seed plants adapted to life on land? $ What is the difference between angiosperms and gymnosperms? $ Explain how one species of palm tree can be on several different islands. $ What is the process that is happening here.

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