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GENERATIVE ORGANS

GENERATIVE ORGANS. Výukový materiál OR 03 - 85 Tvůrce: Mgr. Alena Výborná Tvůrce anglické verze: ThMgr. Ing. Jiří Foller Projekt: S anglickým jazykem do dalších předmětů Registrační číslo: CZ.1.07/1.1.36/03.0005 Tento projekt je spolufinancován ESF a SR ČR. GENERATIVE ORGANS.

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GENERATIVE ORGANS

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  1. GENERATIVE ORGANS Výukový materiál OR 03 - 85 Tvůrce: Mgr. Alena Výborná Tvůrce anglické verze: ThMgr. Ing. Jiří Foller Projekt: S anglickým jazykem do dalších předmětů Registrační číslo: CZ.1.07/1.1.36/03.0005 Tento projekt je spolufinancován ESF a SR ČR

  2. GENERATIVE ORGANS

  3. GENERATIVE ORGANS - flower • usually a coloured plant organ • sexual reproduction • flower is mostly metamorphosed leaf • flower bed is a stem origin

  4. GENERATIVE ORGANS -flower

  5. GENERATIVE ORGANS - flower • the outer part of the flower - perianths • lovage flower– they have not got any covers • composed of petals • COROLLA • homochlamyd– nondifferentiated perianths • heterochlamyd – differentiated perianths • sepals– CALYX (green) • petals – COROLLA (colourful)

  6. GENERATIVE ORGANS - flower inside the flower there are sexual organs

  7. GENERATIVE ORGANS - flower

  8. GENERATIVE ORGANS - flower • unisexual flowers they have inside either pistil or stamens bisexual flowers they have inside both pistil and stamens monoecious plant flowers are of both sexes are in all plants • dioecious plant in one plant there are male flowers and in the other female

  9. GENERATIVE ORGANS - flower • symmetry of the flower • symmetrical (dead-nettle) • regular (cherry) • asymmetrical

  10. GENERATIVE ORGANS - inflorescence

  11. GENERATIVE ORGANS - fruit • composed of seed and pericarp • pericarp arises by the growth of cells of the ovary • kinds of fruits • fleshy • dry

  12. GENERATIVE ORGANS - fruit • fleshy fruits: • soft pericarp • pome (apple) • drupe (plum) • berry (tomato)

  13. GENERATIVE ORGANS - fruit • dry fruits: • dehiscent • follicle • seedpod • capsule • silicule, silicula • non-dehiscent • caryopsis • achaene • nut

  14. REVISION: • 1) Among the generative organs can be classified: • Flower, fruit, seed • 2) Undifferentiated flower is called: • Corolla • 3) What is dioecy? • In the plant there are only male or female flowers. • 4) fleshy fruits include • Drupe, pome, berry • 5) what inflorescence belongs spike to? • Racemose inflorescence

  15. Source of texts and pictures: • DOBRORUKA, Luděk J. Přírodopis pro 7. ročník základní školy. 1. vyd. Praha: Scientia, 1998, 152 s. ISBN 80-718-3134-4

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