Explain peritoneum?

1

In which type of animals does the placenta exist? What is its main function?

5

What is the chorioallantois membrane present in the embryonic development of reptiles and birds? How does this membrane participate in the energetic metabolism of the embryo?

5

How is the yolk sac formed?

1

What is the function of the vitellus in the vertebrate egg? How are these eggs classified according to the amount of vitellus within them?

5

After the morula stage what is the next stage? What is the morphological feature that defines that stage?

5

From which germ layer does coeloms originate?

1

Explain gastrulation?

1

Are all animals coelomate?

1

What is gastrulation? How during gastrulation are the &rst two germ layers formed? Which are these germ layers?

1

What are the four initial stages of the embryonic development?

5

How during gastrulation are the first two germ layers formed? Which are these germ layers?

1

What is coelom? To which structures do coeloms give birth?

1

What are histogenesis?

1

Which is the extra embryonic membrane whose function is to store nitrogen wastes of the embryo?

1