Do white flowers contain any pigment? Give reasons. [Pg. No. 19]

White flowers usually do not contain coloured pigments in sufficient amount to produce a visible colour. Brightly coloured flowers get their yellow, orange or red colours from pigments present in chromoplasts. In white flowers, such coloured pigments are absent or present in very small amounts. Some plastids may also be colourless, as in leucoplasts, which lack pigments. Therefore, without visible coloured pigments, the petals reflect and scatter light almost equally, making the flower appear white.