What are the main substances transferred from the mother to the fetus through the placenta and from the fetus to the mother?
What are the functions of umbilical cord?
Explain foetal pole?
Is there exchange of cells between the mother and the fetus through the placenta?
After the morula stage what is the next stage?
What is coelom? To which structures do coeloms give birth?
From which germ layer do the epidermis and the nervous system originate?
What are peritoneum?
What are the blastopore?
What are the cells produced in the first stage of the embryonic development called?
Are all animals coelomate?
What is yolk sac? How is it formed?
What is the stage of the embryonic development in which these structures are formed?
What are the destinations of the archenteron and of the blastopore?
Explain histogenesis?