DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY. DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY.
False colour scanning electron micrograph of a sporangium, or fruiting body, of a common bread mould Mucor mucedo. Spores circulate freely in the air; this sporangium is dusted with the spores of another species of fungi, Penicillium sp. When they alight on a favourable medium, they germinate a network of hyphae (threads), the function of which is to absorb food for growth & spore production. Spores may be borne in a saclike body or sporangium. This globular structure grows at the end of a specialised hypha called a sporangiophore. The wall cracks under pressure & disintegrates, releasing the spores for dispersal. Magnification: X 214 at 35mm size. Original is bw print b250/339.
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