Examlex
What advice should you follow when using animals as presentation aids?
Gastrulation
Process in embryonic development during which the three germ layers (ectoderm, mesoderm, and endoderm) form.
Blastula
An early stage of embryonic development in animals, characterized by a spherical layer of cells (blastomeres) surrounding a fluid-filled cavity (blastocoel).
Morula
An early embryo consisting of a solid ball of cells.
Gastrula
A three-layered embryo formed by the process of gastrulation.
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