What are other organs and tissues made from that germ layer?

1

How is the yolk sac formed? What is the function of the yolk sac?

5

What are somites?

5

What are the main substances transferred from the mother to the fetus through the placenta and from the fetus to the mother?

5

What is placenta? What are its functions?

1

What is the chorioallantois membrane present in the embryonic development of reptiles and birds?

1

From which germ layer do blood cells originate? What are other organs and tissues made from that germ layer?

1

Is there exchange of cells between the mother and the fetus through the placenta?

5

How does the embryo turn from gastrula into neurula? How is the neural tube formed? What is the embryonic origin of the nervous system in vertebrates?

5

What are the blastopore?

1

How are animals classified according to the germ layers present in their embryonic development?

5

Classify the animals based on the germ layers in their embryonic development?

1

What are extra embryonic membranes?

5

What is placenta?

1

What is coelom?

1