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canvas prints tomato canvas prints nature canvas prints solanum lycopersicum canvas prints plant canvas prints stem canvas prints vascular bundle canvas prints biology canvas prints botany canvas prints plant anatomy canvas prints plant physiology canvas prints sem canvas prints coloured canvas prints scanning electron microscope canvas prints anatomical canvas prints biological canvas prints

photographs tomato photos nature photos solanum lycopersicum photos plant photos stem photos vascular bundle photos biology photos botany photos plant anatomy photos plant physiology photos sem photos coloured photos scanning electron microscope photos anatomical photos biological photos

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Tomato stem. Coloured scanning electron micrograph (SEM) of a cross-section through the stem of a tomato plant (Solanum lycopersicum). A stem is one of the main structural components of a vascular plant. The outer layer is the epidermis, with structural (ground) tissue below that. The semi-circular structure at the centre of the stem is a vascular bundle. Within this area, the larger tubes, the xylem, carry water, and the smaller tubes, the phloem, carry nutrients. On the surface of the stem are glandular hair-like structures called trichomes. The ones with rounded ends secrete distasteful chemicals to deter pests from feeding on the plant.

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