Germinating seed,SEM

Numéro d’image : 11539743
Germinating seed,SEM
Germinating seed. Image 2 of 4. Coloured scanning electron micrograph (SEM) of an early stage in the germination of a plant seed. The radicle (white),the embryonic root,is more fully extended from the seed,and the root 'hairs' are seen. These structures increase the ability of the root to obtain water and nutrients from its surroundings. The seed coat (testa,brown) is beginning to split to reveal the embryonic shoot (plumule) and its seed leaves (cotyledons,green). Eventually the leaves will photosynthesise while the root gathers nutrients from the soil. This is a swede (Brassica napus) seed. For a sequence of seed germination,see images B787/394-397 and B787/398
Licence : Droits gérés
Crédit: Science Photo Library / Power And Syred
Taille de l’image : 2625 px × 3500 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

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