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Questions and Answers
During gastrulation, the inner cell mass of the blastocyst differentiates into how many primary germ layers?
During gastrulation, the inner cell mass of the blastocyst differentiates into how many primary germ layers?
- Two primary germ layers
- One primary germ layer
- Four primary germ layers
- Three primary germ layers (correct)
Which of the following germ layers forms all the tissues and organs of the developing embryo?
Which of the following germ layers forms all the tissues and organs of the developing embryo?
- Ectoderm
- Mesoderm
- Endoderm
- All of the above (correct)
Which of the following is NOT one of the primary germ layers formed during gastrulation?
Which of the following is NOT one of the primary germ layers formed during gastrulation?
- Exoderm (correct)
- Mesoderm
- Endoderm
- Ectoderm
