The cleavage having incomplete division of egg is known as
Holoblastic
Meroblastic
Meridional
Spiral
Which of the following structure is lacking from the placenta
In mammals the chorion and the allantois together form
The chemical fertilizer is present in
A woman with a typical $28 \;day$ menstrual cycle is most likely to become pregnant as a result of sexual intercourse on ..... of cycle
Meridional cleavage results in blastomeres numbering