Question

Why are night blooming flowers generally white? How does the bee know which flower has nectar? Why does cactus have so many thorns? How does the chick recognise her own mother?

Answer 1

1.Night blooming flowers are generally white because at night they do not have to waste resources to secrete out coloured pigments to be visible to insects and at night white colour refracts light which make them visible for pollination.

2.derivative of flavonoid is present in petals which absorb uv radiation whose aroma make the bees know they have nector

3.cactus has so many thorns to reduce evaporation

4.chick recognise their own mother by ferromons which act like hormone and help in the process!!