bio 116 exam 4 Questions and Answers
In animal development, which of the following best describes the process of cleavage? - Ans:-
Mitosis
What are the cells created by cleavage called? - Ans:-Blastomeres
Which of the following are the three germ layers contained in the gastrula? - Ans:-Ectoder...
Gastrulation is the stage of embryonic development following cleavage. During gastrulation, cell division
slows dramatically, and cells are rearranged in a precise way, forming three germ layers. The diagram
below illustrates gastrulation in a frog embryo, represented in cross section.
Drag the labels to their appropriate locations on the diagram. Use only pink labels for pink targets. Not
all labels will be used. - Ans:✔✔-A. blastocoel
B. primitive gut (archenteron)
C. ectoderm
D. mesoderm
E. endoderm
F. blastopore
G. yolk plug
H. blastopore forms
I. primitive gut begins to form
J. three germ layers in place
Part C - Organogenesis in a frog embryoPart complete
Tissue and organ formation begins during the process of organogenesis.
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