Grass family (Poaceae) contains
Exposed stigma
Versatile anther
Both $(a)$ and $(b)$
Large pollens
Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called
Collar like outgrowth arising from the base of ovule and forming a sort of third integument is known as
Rarely among angiosperms the pollen grains influenced the endosperm. This is called as
The structures which guide the pollen tube into synergid is
In castor, proliferation of the outer integumentary cells at micropylar region