GENERATIVE ORGANS Výukový materiál OR 03 - 85 Tvůrce: Mgr. Alena Výborná Tvůrce anglické verze: ThMgr. Ing. Jiří Foller Projekt: S anglickým jazykem do.

Prezentace na téma: "GENERATIVE ORGANS Výukový materiál OR 03 - 85 Tvůrce: Mgr. Alena Výborná Tvůrce anglické verze: ThMgr. Ing. Jiří Foller Projekt: S anglickým jazykem do."— Transkript prezentace:

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 the outer part of the flower - perianths lovage flower– they have not got any covers ▫ composed of petals ▫ COROLLA homochlamyd– non differentiated 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 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

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13 GENERATIVE ORGANS - fruit composed of seed and pericarp pericarp arises by the growth of cells of the ovary kinds of fruits ▫ fleshy ▫ dry

14 GENERATIVE ORGANS - fruit fleshy fruits: ▫ soft pericarp ▫ pome (apple) ▫ drupe (plum) ▫ berry (tomato)

15 GENERATIVE ORGANS - fruit dry fruits: dehiscent ▫ follicle ▫ seedpod ▫ capsule ▫ silicule, silicula non-dehiscent ▫ caryopsis ▫ achaene ▫ nut

16 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

17 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