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'Amyloplasts' (a specialized form of leucoplasts) are non-pigmented organelles found in plant cells responsible for the storage of starch through the polymerisation of glucose.
Large numbers of amyloplasts can be found in underground storage tissues of some plants, such as potato.
Amyloplasts are derived from plastids, which are a specialized class of cellular organs. The plastids carry their own genome and are believed to be descendants of cyanobacteria (blue-green algae) which formed a symbiotic relationship with the eukaryotic cell.
In the root cap (a tissue at the tip of the root) some specialized amyloplasts are thought to be involved in the perception of gravity by the plant (gravitropism). These specialized amyloplasts can sediment according to the gravity vector and are called statoliths.
Amyloplasts have various sizes

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★ Plastid

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★ Chloroplast and etioplast

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★ Chromoplast

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★ Leucoplast

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★ Amyloplast

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★ Statolith

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★ Elaioplast

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★ Proteinoplast