Animal Development Ch 47 Section 1
62 Questions
| Attempts: 81
We are way too far into our studies to stop now, so keep on trucking as we make it to chapter 47 of animal development and our opening quiz. How much can you tell us about the cytoplasm, blastoderm, archenteron and more? Find out in this quiz on Animal Development Ch 47 Section 1!
Questions and Answers
- 1.The rim of the cytoplasm
- 2.Within seconds after sperm binds to the egg, cortical granules fuse with the egg plasma membrane, initiating the________ _________.
- 3.This resists the entry of additional sperm nuclei
- 4.The fertilization envelope and other changes in the egg's surface function together as a long-term _______________.
- 5.Cellular respiration and protein synthesis by the egg
- 6.It is impossible to artificially activate an egg that has had its own nucleus removed.
- A.
True
- B.
False
- 7.Extracellular matrix of an egg
- 8.A sperm must travel through this layer of follicle cells before it reaches the __________.
- 9.Fluid filled cavity in the process of cleavage.
- 10.Hollow ball of cells during cleavage.
- 11.Stored nutrients. Key factor influencing the pattern of cleavage.
- 12.Yolk is often concentrated toward one pole of the egg called the
- 13.The yolk concentration decreases significantly toward the opposite pole called the________. This is also the site where the polar bodies of oogenesis bud from the cell.
- 14.The pattern in animals, whose eggs contain relatively little yolk, in which the blastocoel is centrally located, ant the cleavage furrow passes all the way through the cells.
- 15.The incomplete division of a yolk-rich egg is known as
- 16.Morphogenic process taking up new locations that will allow the later formation of tissues and organs.
- 17.The three layers produced by gastrulation are embryonic tissues collectively called the embryonic __________.
- 18.In the late gastrula, the _________ forms the outer layer, the __________ lines the embryonic digestive tract, ant the _________ partly fills the space between the two.
- A.
Endoderm, ectoderm, mesoderm
- B.
Mesoderm, endoderm, ectoderm
- C.
Ectoderm, endoderm, mesoderm
- D.
Ectoderm, mesoderm, endoderm
- 19.Gastrulation begins at the _________, where individual cells detach from the blastocoel wall and enter the blastocoel as migratory cells called _________.
- A.
Vegetal pole, mesenchyme cells
- B.
Animal pole, mesenchyme cells
- C.
Vegetal pole, vegetal plate
- D.
Animal pole, vegetal plate
- 20.The process in which the remaining cells near the vegetal pole flatten slightly and form a vegetal plate that buckles inward as a result of cell shape changes.
- 21.The buckled vegetal plate then undergoes extensive rearrangement of its cells, transforming the shallow invagination into a deeper, narrower, blind-ended tube called the
- 22.The open end of the archenteron, which will become the anus, is called the
- 23.The part above the crease during gastrulation of a frog becomes the dorsal side of the blastopore, called the
- 24.As the blastoderm is forming, future endoderm and mesoderm cell layers on the surface of the embryo roll over the edge of the lip into the interior of the embryo, a process called
- 25.As gastrulation is completed, the circular lip of the blastopore encircles a ___________ consisting of the outer nutrient-laden cells; these protruding cells will move inward as expansion of the ectoderm causes the blastopore to shrink further.
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