which one of the following statements regarding the embryonic development is true,
a) cleavage divisions bring about considerable increase in protoplasm size
b) in second cleavage division, one of the two blastomeresusually diviidea little sooner than the 2nd.
c) with more cleavages, the resultant blastomeres become larger and larger.
d) cleavage divisions result in a hollow ball of cells called morula

The correct option is B.
The larger blastomere divides a little sooner than the smaller one and so a transitory 3-cell stage is formed before the characteristic 4-cell stage of the embryo. 

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