Structure and Function of Organisms
Lab 6: Sea urchin and chick development
1. The embryonic stage where the cells form hollow ball is called _____________.
2. When cells move from the surface of the hollow ball to the interior and form a pore on the surface, it is called _________________.
3. The three primary germ layers formed by this cell movement are the _____________________, _____________________, and __________________.
4. Ca++ induces membrane-bound vesicles, called _____________ ____________, to fuse with the plasma membrane in the sea urchin shortly after fertilization.
5. In the sea urchin, one function of the fertilization membrane is to block __________________.
6. When a zygotic cell only partially cleaves and the yolk does not divide, it is called _____________________ cleavage.
7. When a zygotic cell completely cleaves, it is called ________________ cleavage.
8. The primitive streak marks which axis of the developing chick? ______________.
9. When nuclei in fungi are not separated by cross walls it is termed ____________.
10. In Phycomyces, what fuses prior to nuclear fusion during sexual reproduction? ______________________
11. Two haploid cells fuse to form a ___________________.
12. Movement of cells to generate a new form is called _______________ _____________.
13. Two types of cell movement are called ____________________ & ________________.
14. We can't observe early embryonic cleavage in the chick because _________________________________________________________.
15. An individual fungal filament is called a _____________________.