Which of the following events occurs only during organogenesis?

• A. Cell migration
• B. Obliteration of the blastocoel
• C. Formation of the archenteron
• D. Sorting of cells into multiple layers
• E. Differentiation of cells into tissues

Answer: (E)

Verified step by step guidance

1. Understand the concept of organogenesis: Organogenesis is the phase in embryonic development where organs form from the three germ layers: ectoderm, mesoderm, and endoderm.
2. Differentiate between the listed events: Cell migration, obliteration of the blastocoel, formation of the archenteron, and sorting of cells into multiple layers are processes that occur during earlier stages of embryonic development, such as gastrulation.
3. Focus on differentiation: During organogenesis, cells undergo differentiation, which is the process where cells become specialized to form specific tissues and organs.
4. Recognize the timing of differentiation: Differentiation is a key event that occurs during organogenesis, as cells develop into various tissues that will form the organs of the organism.
5. Conclude with the correct answer: Differentiation of cells into tissues is the event that occurs specifically during organogenesis, distinguishing it from other developmental stages.