Chromoplasts are the yellow, orange or red color-bodies found in some flowers and fruits.
It is highly probable that starch is only produced as the result of the activity of chromatophores, either in connection with chromoplasts, chloroplasts or leucoplasts.
As a rule they are highly coloured, the colouring matter being contained in the cell-sap, as in blue or red flowers, or in plastids (chromoplasts), as generally in yellow flowers, or in both forms, as in many orange-coloured or reddish flowers.
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