Thornapple seed, light micrograph

Thornapple seed, light micrograph

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Credit: DR KEITH WHEELER/SCIENCE PHOTO LIBRARY

Caption: Thornapple seed. Light micrograph of a section through a seed from a thornapple (Datura stramonium) plant. The seed contains two coalescent carpels and two rows of seeds. When ripe, the capsule splits into four. From outside to the centre: testa (surface) of the seed; pericarp (yellow); endosperm (brown-yellows), which stores nutrients of starch and proteins; embryo; two cotyledons, in between the plumule, and the radical and in between the hypocotyl. Magnification: x5, when printed 10 centimetres wide.

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Keywords: anatomical, anatomy, angiosperm, angiosperms, biological, biology, botanical, botany, capsule, carpel, carpels, cell, cells, coalescent, cotyledon, cotyledons cutout, cut out, cut outs, cut-out, cut-outs, cutouts, datura, datura stramonium, embryo, endosperm, flora, histological, histology, hypocotyl, jimson weed, light micrograph, microscope, nature, pericarp, plant, plants, proteins, radical, section, sectioned, seed, seeds, starch, structure, surface, testa, thornapple, tissue, tissues, transverse, white background, wildlife

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