Question

what is mesoderm and ectoderm ?

Answer 1

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These three layers, the endoderm, theectoderm and the mesoderm, are called the primary germ layers. After gastrulation, the cup-like embryonic stage that contains at least two distinct germ layers is called the gastrula. ... The ICM of the mammalian embryo forms a single layer of cells called the epiblast.

Answer 2

the mid embryoic germ layer called mesoderm and the outermost embrryoic germ layer called ectoderm