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