Cross pollination mechanism of an Iris
Numéro d’image : 13272664
| Cross pollination mechanism of an Iris. The picture shows a flower of Iris unguicularis. Iris flowers have six coloured petals"". The outer three curve downwards, and are called falls. The fall that would have been centre foreground in the picture has been removed to show the reproductive tissues. Vertical, below to centre, is the male anther; its surface covered with pollen grains, off-white. It rests against the style; the flat blade behind the anther. The style terminates above image centre, its edge curved. The edge is the female receptive tissue, the stigma. Pollen grains are visible adhering to the stigma. In an intact flower, a visiting insect must push its way to the base of the flag to obtain its nectar reward. In doing so, it first passes the stigma, depositing pollen from a previous flower, effecting cross pollination. It exits with pollen from the current flower." | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Burgess, Dr. Jeremy |
| Taille de l’image : | 3468 px × 5212 px |
| Model Release : | Non requis |
| Restrictions : | - |
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