A) Cleavage results in a hollow balls of cells called morula
B) Cleavage in mammalian ova is unequal holoblastic and horizontal
C) Rearrangement of blastomeres, a central cavity is formed inside the morula
D) Cleavage bring about considerable increase in the mass of protoplasm
Correct Answer: C
Solution :
Due to rearrangement of blastomeres, a central cavity is formed inside the morula. This sphere of cells with a cavity (blastodermic cavity) at the centre is called blastodermic vesicle (also called blastocyst).
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