Common earthworm. Coloured scanning electron micrograph (SEM) of the rear end of a common earthworm (Lumbricus terrestris). The anus (light brown) is found on the earthworm's last segment (pygidium). Also visible are the chaetae,tiny thorn-like projections which are used for movement. Adult earthworms can grow up to 30cm in length. Their diet consists of organic substances in the soil. They aid the regeneration of mineral supplies,and their movement helps to break up the soil and improve aeration. They are thus vital to the regeneration of arable soils. Magnification unknown | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Gschmeissner, Steve |
Taille de l’image : | 2383 px × 3231 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |