Rarely among angiosperms the pollen grains influenced the endosperm. This is called as
Metaxenia
Nemec phenomenon
Xenia
Mesogamy
Dichogamy which helps in cross pollination is a floral mechanism in which
Chalazogamy is found in
Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called
A typical angiosperm embryo sac at maturity has
The allogamy is best favoured by