Excretory products responsible for the red, purple and blue colours of flowers are called

Excretory products responsible for the red, purple and blue colours of flowers are called anthocyanins. Anthocyanins are water-soluble pigments that belong to the flavonoid group. They are synthesized by plants in response to various environmental stimuli, such as light, temperature, and pH. Anthocyanins are responsible for the red, purple, and blue colors in many flowers, fruits, and vegetables. They play important roles in attracting pollinators, protecting plants from UV radiation, and regulating plant growth and development.