The Word "Paleolithic" Means "Old Stone

question 15

True/False

The word "Paleolithic" means "old stone."

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Definitions:

Three-Layered Embryo

Also known as the gastrula, it refers to an early stage in embryonic development where the embryo consists of three primary layers: ectoderm, mesoderm, and endoderm.

Organogenesis

The phase during embryonic development when the ectoderm, endoderm, and mesoderm develop into the internal organs of the organism.

Embryonic Development

The process by which the embryo forms and develops, starting from a single cell and leading to a complex, multi-cellular organism.

Archenteron

The primitive gut formed during early embryonic development in animals, from which the digestive tract eventually develops.