Common earthworm. Coloured scanning electron micrograph (SEM) of the rear end of a common earthworm (Lumbricus terrestris). The anus (grey,centre left) 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 30 cm in length. Their diet consists of organic substances in the soil,and their movement helps to break up the soil and improve its aeration. They are thus vital to maintaining the quality of arable soils. Magnification unknown | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Gschmeissner, Steve |
Taille de l’image : | 2014 px × 2673 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |