Fertilization is
Fission of sperm and ova
Fusion of sperm and ova
Zygote formation
Gamete formation
The third phase in the development of a mammal is
Choose the correct pair -
Identify figure
Assertion : In morula stage, cells divide without increase in size.
Reason : Zona pellucida remains undivided till cleavage is complete.
Implantation is the process of