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Study Material on Generative Organs in English

Learn about flower anatomy, sexual reproduction, plant structures, types of flowers, inflorescences, fruits, and revision on generative organs. Educational content with clear explanations and illustrations.

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Study Material on Generative Organs in English

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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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