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Chap.14 植物繁殖和發展

Chap.14 植物繁殖和發展. 鄭先祐 (Ayo) 製作. Life Science 2010. Reproduction and Life cycles in various plants. Alternation of generations ( 世代交替 ) gametophyte → gametes → sporophyte (2N) green algae ( 綠藻 ) (Fig. 14.1) moss 苔蘚類 (Fig. 14.2) Fern 蕨類 (Fig. 14.3) pine tree 松樹 (Fig. 14.4)

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Chap.14 植物繁殖和發展

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  1. Chap.14 植物繁殖和發展 鄭先祐(Ayo) 製作 Life Science 2010

  2. Reproduction and Life cycles in various plants • Alternation of generations (世代交替) • gametophyte → gametes → sporophyte (2N) • green algae (綠藻) (Fig. 14.1) • moss 苔蘚類 (Fig. 14.2) • Fern 蕨類 (Fig. 14.3) • pine tree 松樹 (Fig. 14.4) • flowering plant 顯花植物 (Fig. 14.5) chap.14 Plant reproduction

  3. Fig. 14.1 Life cycle of Ulothrix, a green alga 單套 有性繁殖 chap.14 Plant reproduction

  4. Fig. 14.1 Life cycle of Ulothrix, a green alga chap.14 Plant reproduction

  5. 配子體 孢子體 配子體 Fig. 14-2 the moss life cycle. chap.14 Plant reproduction

  6. 配子體 孢子體 Fig. 14.3 the Fern chap.14 Plant reproduction

  7. 隨風授粉 Fig. 14.4 pine tree chap.14 Plant reproduction

  8. 只剩一個 雌蕊 8個細胞 雄蕊 Fig. 14.5 flower chap.14 Plant reproduction

  9. Fig. 14.6 a pollen chap.14 Plant reproduction

  10. Essay 14.1 The coevolution of pollen and insects • The insects taking food from one flower after the next, became vehicles for pollen transport. • As time passed, some flowers developed an increasing dependency on the visit of pollen-bearing insects. • In time, plants began to compete for the attention of insects. chap.14 Plant reproduction

  11. 昆虫與花朵的共同演化 chap.14 Plant reproduction

  12. chap.14 Plant reproduction

  13. Essay 14.2 make me a flower • Arabis holboilli, 通常是開 blue flowers。 • 但偶而的會長出如同黃色的花朵(如圖)。 • 這種花，其實並不是花。 • 是rust fungus(真菌)的寄生，take over the plant's genetic machinery. chap.14 Plant reproduction

  14. Essay 14.2 make it yellow • Rust fungus 接掌基因控制，使其快速增長葉片，且是黃色的葉片，形成如同黃花的葉片。 • 其上有真菌的生殖器官，產生孢子。 • 且有蜜汁吸引昆虫，來沾粘孢子。 chap.14 Plant reproduction

  15. 子葉 種皮 Fig. 14-7 Embryonic development chap.14 Plant reproduction

  16. 單子葉 雙子葉 是3的倍數 是5的倍數 網狀葉脈 平行葉脈 有兩片子葉 只有一個子葉 Fig. 14-8 單子葉和雙子葉的比較 chap.14 Plant reproduction

  17. 增生區 Fig. 14.9 根部構造 chap.14 Plant reproduction

  18. 篩管 樹皮 Fig. 14.10 primary and secondary growth in the stem chap.14 Plant reproduction

  19. Fig. 14.10 primary and secondary growth in the stem chap.14 Plant reproduction

  20. Fig. 14.11 (a) sclerenchyma 厚壁細胞 (b) collenchyma (c) parenchyma 薄壁細胞 chap.14 Plant reproduction

  21. 植物 荷爾蒙 (hormones) • Table 14.1 Plant hormones • Auxins：control elongation • Gibberellins： stimulate cell division and elongation, aid in pollen germination • Cytokinins ： react with auxins to produce growth chap.14 Plant reproduction

  22. Fig. 14.12 In this classic experiment, the tip was cut from an oat seedling and placed on an agar cube that absorbed any fluids that might seep from the tip. Then the block was placed off center on a decapitated seedling. 有agar的地方，生長較快。 chap.14 Plant reproduction

  23. Fig. 14.14 Gibberellins have a dramatic effect on stem growth, as seen in these plants. chap.14 Plant reproduction

  24. Fig. 14.13 Agent Orange was sprayed over the jungles of Vietnam (越南) to defoliate trees and make trails more visible. It was later implicated in a host of severe health problems among veterans exposed to it. chap.14 Plant reproduction

  25. 問題與討論！ japalura@hotmail.com Ayo NUTN website: http://myweb.nutn.edu.tw/~hycheng/ chap.14 Plant reproduction

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