What are the animal pole and the vegetal pole of the vertebrate egg?

5

How yolk sac is formed?

1

From which germ layer do the liver and the pancreas originate? What are other organs and tissues made from that germ layer?

1

Explain monozygotic and dizygotic twins?

1

How is the mesoderm of triploblastic animals formed?

1

In which type of animals does the placenta exist?

1

What are histogenesis?

1

Define polyembryony?

1

What are the extra embryonic membranes present in vertebrates?

5

What are the three types of germ layers that form tissues and organs in animals?

5

How is the yolk sac formed?

1

From which germ layer do the liver and the pancreas originate?

1

What is the difference between amnion and chorion?

5

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

1

What is the function of the yolk sac?

1