Hollyhock pollen grain, SEM
Numéro d’image : 12933437
| Hollyhock pollen grain. Coloured scanning electron micrograph (SEM) of a pollen grain from a hibiscus (Alcea setosa) flower. Pollen grains are the male sex cells of a flowering plant. Their characteristic surface is used by botanists to recognise and classify plants. Pollen in plants is used for transferring male genetic material from the anther of a single flower to the stigma of another in cross-pollination. In a case of self-pollination, this process takes place from the anther of a flower to the stigma of the same flower Magnification: x600 when printed at 10 centimetres wide | |
| Licence : | Libre de droits |
| Crédit: | Science Photo Library / Gschmeissner, Steve |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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Mots clés
- alcea,
- angiosperme,
- angiospermes,
- biologie,
- biologique,
- botanique,
- cellule,
- cellule sexuelle,
- coloré,
- colorié,
- colorisé,
- exine,
- faune,
- flore,
- gamète,
- gamètes,
- grain,
- grains,
- M.E.B.,
- masculin,
- MEB,
- microscope électronique à balayage,
- mur externe,
- nature,
- pollen,
- pollinisation,
- reproduction,
- seul,
- structure reproductive,
- unique