An avian blastula is called

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(C) The avian blastula is known as a $Discoblastula$ because it is formed through meroblastic discoidal cleavage,which is characteristic of birds,rept

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Blastoderm

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(C) The avian blastula is known as a $Discoblastula$ because it is formed through meroblastic discoidal cleavage,which is characteristic of birds,reptiles,fishes,and egg-laying mammals. In these organisms,the cleavage is restricted to a small disc of cytoplasm at the animal pole. This resulting disc-shaped structure is referred to as the $Blastoderm$.

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