A) Cleavage divisions bring about considerable increase in the mass of protoplasm
B) In the second cleavage division, one of the two blastomeres usually divides a little sooner than the second
C) With more cleavage divisions, the resultant blastomeres become larger and larger
D) Cleavage division results in a hollow ball of cells called morula
Correct Answer: B
Solution :
During embryonic development of human, in the second cleavage division, one of the two blastomeres usually divides a little sooner than the second. Cleavage is a series of mitotic cell divisions that increase the number of cells but does not change the size of the original mass.
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