The type of blastula formed in birds is

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(D) The type of blastula formed in birds is a $Discoblastula$. In birds,the egg contains a large amount of yolk (polylecithal),which restricts cleavag

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Discoblastula

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(D) The type of blastula formed in birds is a $Discoblastula$. In birds,the egg contains a large amount of yolk (polylecithal),which restricts cleavage to a small disc-shaped area at the animal pole. This process is known as meroblastic discoidal cleavage. As a result,the blastula formed is disc-shaped and is specifically termed as a $Discoblastula$,which is also observed in reptiles,fishes,and egg-laying mammals.

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