User:Amartya01

In the flowering process,the first opening or blooming of a flower is termed as anthesis.The antonym for anthesis is cleistogamy which is an adaptation for self pollination by cleistogamous flowers that never bloom, e.g,Oxalis and commelina e.t.c. There are two types of pollination namely, self pollination and cross pollination. There are two types of self pollination namely autogamy and geitonogamy.There are various mechanisms for allogamy (cross pollination) such as dichogamy where the male and female parts of a flower namely stamens and carpels do not mature at the same time.Dichogamy is of two types namely,protandry and protogyny.