60.2 MB (3.2 MB compressed)
5616 x 3744 pixels
47.5 x 31.8 cm ⏐ 18.7 x 12.5 in (300dpi)
DR KEITH WHEELER / SCIENCE PHOTO LIBRARY DR KEITH WHEELER / SCIENCE PHOTO LIBRARY
Dodder parasitic plant. Polarised light micrograph of a section through a host plant parasitised by a dodder (Cuscuta sp.). This vine-like parasitic plant grows around the stems of gorse and heather, as it is unable to survive without a host due to having no roots. Nutrients and water are obtained through root-like structures called haustoria (red and green fibres, left), which tap into the tissues of the host plant's vascular system (yellow and blue clusters, right). Magnification: x100 when printed 10 centimetres wide.
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