Scanning electron micrograph of two types of bread mould,Penicillium sp. & Mucor mucedo,growing on the surface of a slice of bread. Spores circulate freely in the air. When they alight on a favourable medium,they germinate an extensive network of hyphae (threads),the function of which is to absorb nourishment for growth & for the production of spores. The picture shows a sprinkling of single spores; some have germinated to form a mass of hyphae. Spores may be borne in saclike structures called sporangia,as in Mucor (globular bodies),or directly on the hyphae as in Penicillium (feathery) structures. Magnification X100 (at 10x8 size) | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Burgess, Dr. Jeremy |
Taille de l’image : | 3543 px × 2573 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |