Rearrangement of cells of the "area pellucida" of blastoderm gives rise to:
Correct answer: A. Endoderm
- A. Endoderm
- B. Mesoderm
- C. Ectoderm
- D. Both A and B
- E. None of these
Explanation
Rearrangement of cells of the "area pellucida" of blastoderm gives rise to endoderm. The endoderm is one of the three primary germ layers that form during early embryonic development in animals. It is one of the fundamental tissue layers from which various organs and tissues in the body originate. The other two primary germ layers are the ectoderm and the mesoderm.During gastrulation, a process that follows the blastula stage in embryonic development, some cells in the developing embryo migrate inward through the primitive streak and give rise to the endoderm. These cells form an inner layer within the developing embryo.The endoderm plays a crucial role in the formation and development of several vital organs and systems.
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About Growth and Development
Embryonic development covers fertilization, cleavage, formation of the blastula and gastrula, germ layers, organ formation and differentiation. Regeneration describes the replacement of lost tissues or body parts, whereas ageing involves gradual cellular and physiological changes linked to reduced repair, altered metabolism and declining organ function.
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