Question

why do you think grass flowers are not brightly coloured​

Answer 1

Answer:

Insect pollinating flowers have big bright coloured petals with sweet scent, to attract insects. ... Because, these flower doesn't attract insect for pollination as its main agent is wind. Grass Flower is a wind pollinating flower, thus don't have bright coloured petals or sweet scent.

Answer 2

Answer:

as they don't have enough pigment