St. John's wort seeds. Coloured scanning electron micrograph (SEM) of seeds from a St. John's wort flower (Hypericum sp.). A seed contains an embryo (a fertilised ovule from which a new plant can grow) and a supply of food. The food is used either while the embryo develops,or during germination. Seed shapes and textures vary widely,affecting how they are dispersed from their parent plant. Dispersal methods include being carried by the wind,or water or on animal coats,or being eaten and deposited in animal droppings | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Gschmeissner, Steve |
Taille de l’image : | 4817 px × 3630 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |