Cactus seed, SEM

Cactus seed, SEM

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Caption: Cactus seed. Coloured scanning electron micrograph (SEM) of a seed from a cactus flower (family Cactaceae). A seed contains an embryo (a fertilised ovule from which a new plant can grow), and a supply of food. The food is used either while the embryo grows within the developing seed, or during germination. Seed shapes and surface textures vary widely, affecting how they are dispersed from their parent plant. Seed dispersal methods include being carried by the wind, or water or on animal coats, or being eaten and deposited in animal droppings. Cactus seeds are usually dispersed in animal droppings. The cacti are succulent plants adapted to grow in arid areas like deserts. Magnification: x830 when printed 10 centimetres wide.

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Keywords: 1, biological, biology, botanical, botany, cactaceae, cactus, coloured, cut out, cut-out, cutout, false-coloured, flora, flower, horticultural, horticulture, nature, one, parts, plant, plants, reproduction, reproductive part, scanning electron micrograph, scanning electron microscope, seed, seed science, sem, single, structure, structures, succulent

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