Garden pea (Pisum sativum) in flower
Bildnummer 11731366
| A garden pea plant,Pisum sativum,in flower. The picture shows a flower (white) and a developing pod (below,left). The picture was taken after a rain shower,and shows droplets of water adhering to the water-repellent waxy coating on the epidermis of the plant. Water has a high surface tension,encouraging the formation of spherical droplets,a low-energy shape that minimises surface area for a given volume of liquid.Pea flowers enclose the reproductive tissues within a flower that has only one plane of symmetry (zygomorphic ). Such a structure usually indicates that the flower is pollinated by insects. Although insects do visit the flowers of peas,they are not necessary to ensure a crop in commercial cultivars,which have long been selected to be self-pollinating. Peas therefore represent a crop whose performance is of little concern in the face of a fall in bee populations | |
| Lizenzart: | Lizenzpflichtig |
| Credit: | Science Photo Library / Burgess, Dr. Jeremy |
| Bildgröße: | 3468 px × 5212 px |
| Modell-Rechte: | nicht erforderlich |
| Eigentums-Rechte: | nicht erforderlich |
| Restrictions: | - |
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