What is formed at the time of gastrulation?

Gills

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Heart

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Myotome

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Archenteron

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Solution

The correct option is D Archenteron
The word gastrulation means formation of a gut. Gastrulation occurs varies from species to another but usually it involves a process of invagination at one end of blastula, which results in the formation of two layered cup shaped gastrula. Gastrulation results in the virtual obliteration of blastocoel and its replacement by a new cavity, the archenteron or primitive gut.

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