Question

The plant from which a blue dye was extracted was
a) Opium
b) Indigo
c) Blue berry
d) Poppy
​

Answer 1

Answer:

b) indigo

is the wright answer

Answer 2

The indigo/blue dye comes from a leguminous plant of the Indigofera genus. Only two species are used commercially as a dye, Indigofera tinctoria and Indigofera suffructiosa. Indigofera tinctoria, also called true indigo, is a species of plant from the bean family that was one of the original sources of indigo dye. Dye is obtained from the processing of the plant's leaves. They are soaked in water and fermented in order to convert the glycoside indican naturally present in the plant to the blue dye indigotin.

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