Explain coeloms. From which germ layer does it originate?
What are the animal pole and the vegetal pole of the vertebrate egg?
What are the blastopore?
Which is the extra embryonic membrane whose function is to store nitrogen wastes of the embryo?
Explain gastrulation?
What is the main function of placenta?
Nmae extra embryonic membranes layers in vertebrates?
From which germ layer do the epidermis and the nervous system originate?
What are extra embryonic membranes?
After the blastula stage what is the following stage of the embryonic development? How is the passage from blastula to the next stage called?
What are extra embryonic membranes? Name these layers in vertebrates?
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?
What is the cell division during the first stage of the embryonic development called? How is this stage characterized?
How is the mesoderm (third germ layer) of triploblastic animals formed?
Which is the extra embryonic membrane whose function is to store nitrogen wastes of the embryo? Is this function present in placental mammalian embryos?