Developing flower of Antirrhinum majus
Bildnummer 13504247
| Scanning electron micrograph of a developing flower bud of the snapdragon, Antirrhinum majus. The picture shows a dissected bud, 0.6 mm in diameter. At this early stage, three concentric types of tissue can be seen. The outermost (brown) will develop into five sepals; a leaf-like protective covering for the bud. The pale purple tissues are the future petals of the flower, and the central red region will develop sexual organs - the stamens and style. The flower is zygomorphic; it has only one plane of symmetry - here, on each side of a central vertical axis. The sepals will all be of a similar shape at maturity, but the petals will not. The lower petals form a broad hinged landing platform for insects; the upper, a flag. Heavy insects (eg bumblebees) landing on the platform cause it to sink, enabling access to the sexual organs of the plant, resulting in pollination and seed formation. | |
| Lizenzart: | Lizenzpflichtig |
| Credit: | Science Photo Library / Burgess, Dr. Jeremy |
| Bildgröße: | 4500 px × 4500 px |
| Modell-Rechte: | nicht erforderlich |
| Restrictions: | - |
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