From the egg in gastrula stage if you remove all cells which form endoderm, the new organism will lack of
Eyes
Heart
Eyes and brain
Some of the visceral organs
Bartholin glands are also called
In teleosts, reptiles and birds the cleavage pattern is
Enlarged end of penis (called the glans penis) is covered by the skin called
During cleavage $DNA$ synthesis
Identify $A$ to $F$ in the diagram given below