A) Clevage \[\to \] Morula \[\to \] Blastula\[\to \] Gastrula
B) Gastrula \[\to \] Neurula\[\to \] Blastula\[\to \] Morula
C) Morula \[\to \] Neurula \[\to \] Gastrula \[\to \] Blastula
D) lastula \[\to \] Gastrula \[\to \]Neurula \[\to \] Morula
Correct Answer: A
Solution :
During development first stage is cleavage. In frog first two are equal holoblastic. Ilnd stage is 32 cells staged called morula (solid wall without cavity) then is the blastula stage which is characterized by the presence of blastocoel and the last stage is gastrula.
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