The structure of a flower can also be expressed by the means of floral diagrams. The use of schematic diagrams can replace long descriptions or complicated drawings as a tool for understanding both floral structure and evolution. Such diagrams may show important features of flowers, including the relative positions of the various organs, including the presence of fusion and symmetry, as well as structural details.

The principal purpose of a flower is the reproduction of the individual and the species. All flowering plants are heterosporous, producing two types of spores. Microspores are produced by meiosis inside anthers while megaspores are produced inside ovules, inside an ovary. In fact, anthers typically consist of four microsporangia and an ovule is an integumented megasporangium. Both types of spores develop into gametophytes inside sporangia. As with all heterosporous plants, the gametophytes also develop inside the spores (are endosporic).

  • Koheselt saada olevad lillesibulad!

    Kuna saabumas on esimene sibullillede koorem, on meil koheselt pakkuda järgnevat sortimenti: saadavus Pildimaterjal on nähtav siin: kataloog Küsi pakkumist!

  • Pojengid sügiseseks istutuseks!

    Sügis on parim aega pojengide istutamiseks! Pakume paljasjuursete pojengide kvaliteetset algmaterjali sügiseseks istutuseks. Valikus on nii kompaktseid potisorte kui ka...

  • Võõrasema seemned 2019/2020

    Alanud on võõrasema seemnete ettetellimine 2019a külviks. Lisaks Eesti turul populaarsetele sortidele pakume ka järgmist: amplisse sobivad sordiseeriad nagu Cool...

Koheselt saada olevad lillesibulad!

Vaata pakkumist

Pojengid sügiseseks istutuseks!

Vaata pakkumist

Võõrasema seemned 2019/2020

Vaata pakkumist