1.

During cleavage, what is true about cells?A. Nucleocytoplasmic ratio remains unchangedB. Size does not increaseC. There is less consumption of oxygenD. The division is like meiosis

Answer» Correct Answer - B
(b) Cleavage is the rapid mitotic cell division of the zygote upto the completion of blastula stage. Cleavage differs grom the ordinary mitosis in following respects:
(a) Interphase are short and do not involve growth
(b) Division are very rapid, nuclear cytoplasmis ratio increases with each division.
(c) There is a decrease in the sice of blastomeres (cells resulting from cleavage), but size and shape of the embryo do not change.


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