Part B - Gastrulation in a frog embryo Gastrulation is the stage of embryonic de

Question

Part B - Gastrulation in a frog embryo Gastrulation is the stage of embryonic development following cleavage. During gastrulation, cell division slows dramatically, and cells are rearranged in a 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 blastopore forms primitive gut (archenteron) primitive gut begins to form blastocoel ectoderm somites blastopore mesoderm notochord forms three germ endoderm yolk plug layers in place Adapted from Biology by Campbell and Reece 2008 Pearson Education, Inc.

Explanation / Answer

a- Blastocoel

b- Archenteron (primitive gut)

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

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