DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY
False-colour scanning electron micrograph of a slice through a raw potato, Solanum tuberosum, showing starch grains, or amyloplasts, within a cellular compartment. Starch is synthesised from sucrose, a sugar formed in the leaves during photosynthesis & transported to the tuber (potato) via the phloem (vascular tissue). It is used as an energy store for the later development of buds on the surface of the potato. The starch grains here are up to 50 microns across, larger than most plant cells. Magnification: x180 at 35mm size, x280 at 6x4.5cm size. Reference: MICROCOSMOS, figure 9.20, page 185.
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