The megaspore mother cell divides meiotically forming haploid embryo sac and the plants thus formed are usually sterile in
Recurrent apomixis
Non-recurrent apomixis
Adventive embryony
Vegetative reproduction
The movement of pollen tube is called
Entry of pollen tube with two male gametes and tube nucleus through micropyle, is
In which of the following types of embryo sac the megaspore nuclei do not fuse to form a triploid nucleus at chalazal end
An event unique to angiosperms is
The number of nuclei in a mature embryo sac are