Which of these can lead to polyembryony?
a. Proliferation of nuclear cells in embryo
b. Fertilization of helper cells by sperms carried by another pollen tube in embryo sac
c. Cleavage in pro embryo during embryo development
Occurrence of more than one embryo in a seed is referred to as polyembryony.
Proliferation of nuclear cells in embryo, fertilization of helper cells by sperms carried by another pollen tube in embryo sac and cleavage in pro embryo during embryo development can lead to polyembryony.