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9 Nov 2021
Problem 3
Page 720
Section 27.1: Visual Connection Questions
Chapter 27: Introduction to Animal Diversity
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9 Nov 2021
Background and context
During the embryonic development, animals exhibit the separation of tissues into germ layers. The embryo acquires the fundamental cell layers called the outermost ectoderm, middle mesoderm and the inner endoderm which further develops into specialized cells, tissues or the organs.
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