Developing turnip (Brassica campestris) embryo, TEM
Bildnummer 13426154
| Coloured transmission electron micrograph (TEM) of a developing embryo of a turnip (Brassica campestris). This is a thin section of a young embryo, three days after pollination took place. The large light and dark yellow bodies are cell nuclei. The pale green empty spaces are vacuoles containing liquid, and the small coloured particles are organelles within the cytoplasm, including mitochondria and plastids. The embryo is globular; seen here as the circular group of small, dense cells, to top. The two larger cells below are part of a stalk called the suspensor. The embryo here consists of sixteen cells; seven are partly visible. As it grows, it will develop a clear polar axis, with a shoot apex between two cotyledons above, and a root tip to its base. The embryo here is isolated from the plant; in life it is bathed and fed by nutrients within the embryo sac. Magnification: x3000 at 10x8. | |
| 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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