Saheli is a
Oral contraceptive for females
Surgical sterilization method for females
Diaphragm for females
Surgical method of sterilization in males
Which cavity arises by the invagination of endoderm and mesoderm
In early haemopoietic tissue of embryo, there is
Meroblastic cleavage is
Which extraembryonic membrane in humans prevents desiccation of the embryo inside the uterus?
After implantation, finger-like projections on the trophoblast are called $...A....$ which are surrounded by $...B..$ and maternal blood. Here $A$ and $B$ refers to