THIERRY BERROD, MONA LISA PRODUCTION / SCIENCE PHOTO LIBRARY THIERRY BERROD, MONA LISA PRODUCTION / SCIENCE PHOTO LIBRARY
Tobacco leaf. Coloured environmental scanning electron micrograph (ESEM) of the surface of a tobacco (Nicotiana sp.) leaf. The surface is covered in glandular trichomes (hair-like) that secrete distasteful chemicals to deter pests from feeding on the leaves. Also seen are stomata (light green ovals), pores that are the sight of gaseous exchange in the plant.
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