When the ovule is curved and embryo sac becomes horse-shoe shaped, such an ovule is called
Which of the following is not true for double fertilization?
In which of the following types of embryo sac the megaspore nuclei do not fuse to form a triploid nucleus at chalazal end
A schematic illustration of the pollen grain is called
The insect Blastophaga grossorum is associated with the pollination of