How primary germ layers are formed by gastrulation. Introduction: The term “gastrulation” was formulated by Ernst Haeckel in 1872. It is basically a phase of embryonic development. In this phase, gastrula (multi-layered structure) is formed from a single layered blastula. Gastrulation refers to the movement of cells to form the primary germ layers.

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Chapter 23, Problem 15CA

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How primary germ layers are formed by gastrulation.

Introduction:

The term “gastrulation” was formulated by Ernst Haeckel in 1872. It is basically a phase of embryonic development. In this phase, gastrula (multi-layered structure) is formed from a single layered blastula. Gastrulation refers to the movement of cells to form the primary germ layers.

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