A) Zygote \[\to \] Cleavage \[\to \] Blastula \[\to \] Gastrula
B) Zygote \[\to \] Cleavage \[\to \] Gastrula \[\to \] Blastula
C) Cleavage \[\to \] Zygotes \[\to \] Blastula \[\to \] Gastrula
D) Zygote \[\to \] Blastula \[\to \] Cleavage \[\to \] Gastrula
Correct Answer: A
Solution :
In frog the zygote after about two and a half hours of fertilization undergo long series of changes involving repeated mitotic cell division, cell growth and differentiation, formation of tissues and organs develops into a larval form called tadpole. The sequential stages of divisions are-Early cleavage -> Morula \[\to \]Blastula \[\to \]Gastrula stage\[\to \] stage of 3 primary germ layers\[\to \] organogeny\[\to \]Formation of tadpole.
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