Question

define :- Gastrulation​

Answer 1

Explanation:

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Answer 2

Explanation:

Gastrulation is the process during embryonic development that changes the embryo from a blastula with a single layer of cells to a gastrula containing multiple layers of cells. Gastrulation typically involves the blastula folding in upon itself or dividing, which creates two layers of cells. Organisms that do not form a third layer are known as diploblastic organisms. These include the jellyfish and related animals. Triploblastic organisms contain a third layer, the mesoderm, which is created from one of the first two layers. Triploblastic organisms account for the majority of higher animals.

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