A: Blastocyst undergoes gastrulation to produ | vedclass

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(A) Gastrulation is the process in embryonic development during which the blastula (or blastocyst in mammals) is reorganized into a multilayered struc

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Assertion and Reason both are correct and Reason is the correct explanation of Assertion.

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(A) Gastrulation is the process in embryonic development during which the blastula (or blastocyst in mammals) is reorganized into a multilayered structure known as the gastrula,which contains the three germinal layers: ectoderm,mesoderm,and endoderm.This process is driven by coordinated cell movements known as morphogenetic movements,which include processes like epiboly,emboly,involution,invagination,and delamination.These movements allow cells to migrate to their specific positions,thereby establishing the body plan and the final morphology of the embryo.Therefore,both the Assertion and the Reason are correct,and the Reason provides the correct explanation for the process described in the Assertion.

$A$: Blastocyst undergoes gastrulation to produce the three germinal layers.
$R$: This involves cell movements (morphogenetic movement) that eventually help to attain new shape and morphology of embryo.

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$A$: Blastocyst undergoes gastrulation to produce the three germinal layers.$R$: This involves cell movements (morphogenetic movement) that eventually help to attain new shape and morphology of embryo.