Question

what is plastid? what is the work of leucoplast?

Answer 1

Plastid is a cell orgenell which gives green coloured pigment
Leucoplasts stores food in the form of starch

Answer 2

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Leucoplasts are a group of plastids that include many differentiated colourless organelles with very different functions which act as a store for starch in non-green tissues such as roots, tubers, or seeds The primary function of leucoplast is the storage of starch, lipids and proteins. Common example – Chloroplast.