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15 Cards in this Set

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  • Back
The embryonic stage where the cells form hollow ball is called _____________
blastula
When cells move from the surface of the hollow ball to the interior and form a pore on the surface, it is called _________________.
blastopore
The three primary germ layers formed by this cell movement are the _____________________, _____________________, and __________________.
ectoderm, mesoderm, and endoderm
Ca++ induces membrane-bound vesicles, called _____________ ____________, to fuse with the plasma membrane in the sea urchin shortly after fertilization.
cortical granules
In the sea urchin, one function of the fertilization membrane is to block ________________
polyspermy
When a zygotic cell only partially cleaves and the yolk does not divide, it is called _____________________ cleavage.
meroblastic
When a zygotic cell completely cleaves, it is called ________________ cleavage.
holoblastic
The primitive streak marks which axis of the developing chick? ______________
anterior/posterior
When nuclei in fungi are not separated by cross walls it is termed ____________.
coenocytic
In Phycomyces, what fuses prior to nuclear fusion during sexual reproduction? ___________________
gametangia
Two haploid cells fuse to form a ________________
diploid Zygote
Movement of cells to generate a new form is called _______________ _____________.
morphogenic movements
Two types of cell movement are called ____________________ & _______________
ingression and invagination
We can't observe early embryonic cleavage in the chick because _______________________________________________________________
occurs inside body of hen
An individual fungal filament is called a __________________
hypha