The region where sperm enters the egg is called
Equator
Receptor cone
Animal pole
Vegetal pole
Placenta is present in
Given diagram refers to spermatogenesis and oogenesis in humans. Identify $A$ to $H$ correctly.
The part of fallopian tube which is closer to the ovary is............
During gastrulation ....... is formed
Which of the following decidua layer forms a partition between developing embryo and lumen at uterus?