Ontogenetically liver and pancreas are or During embryonic development pancreas and liver develop from which germinal layer
Ectoderm
Mesoderm
Endoderm
Blastopore
Choose the correct combination of labelling the hormonal control of female reprodcutive system
In which of the following organism testes descends into scrotum in breeding season but in non-breeding season goes up
Cells of leydig are found in
Assertion : Old age is not an illness. It is a continuation of life with decreasing capacity for adaptation.
Reason : Cessation of mitosis is a normal genetically programmed event.
If the nuclei from an $8$-celled stage of an embryo are transplanted into enucleated eggs, which of the following events is likely to occur