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

1

Explain blastopore?

1

What are the four initial stages of the embryonic development?

5

What are pericardium?

1

What are the archenteron and the blastopore? 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?

5

What are the archenteron and the blastopore? What are the destinations of the archenteron and of the blastopore?

1

Define polyembryony?

1

After the neurula stage and from its ventral portion to the dorsal how can the morphology of the embryo be described?

5

Explain animal pole?

1

How is the neural tube formed? What is the embryonic origin of the nervous system in vertebrates?

1

What are twins? Genetically what are the two types of twins that can be generated?

5

Which cells are produced in the first stage of embryonic development?

1

After the morula stage what is the next stage?

1

What is the function of the vitellus in the vertebrate egg?

1

What is placenta? What are its functions?

1