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31.9 MB (3.4 MB compressed)
2894 x 3858 pixels
24.4 x 32.8 cm ⏐ 9.6 x 12.9 in (300dpi)
SUSUMU NISHINAGA / SCIENCE PHOTO LIBRARY SUSUMU NISHINAGA / SCIENCE PHOTO LIBRARY
Potato starch. Coloured scanning electron micrograph (SEM) of starch grains from potato cells. The stored starch grains are called amyloplasts. Starch is synthesised from sucrose, a sugar formed in the leaves during photosynthesis and transported to the tuber (potato) through the phloem (vascular tissue). It is used as a store of energy for the later development of buds on the surface of the potato. Starch is an important food resource for humans, hence the potato's popularity as a crop.
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