Question

In most animal embryos , the archenteron is present in the blastula

Answer 1

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$\mathfrak{\blue{Answer.}}$ After the cleavage has produced over 100 cells, the embryo is called a blastula. The blastula is usually a spherical layer of cells (the blastoderm) surrounding a fluid-filled or yolk-filled cavity (the blastocoel).
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