In the first phase of gastrulation of amphibians there occurs the separation of
Ectoderm
Mesoderm
Endoderm
Mesoectoderm
In a simplest type of placenta the foetal blood is separated from the maternal blood by six barriers. How many barriers are lost in human placenta
Find out $A, B$ and $C$ in the figure given below
The origin of kidney and ureter in Rana tigrina is
Female rabbit is
In human female, the blastocyst