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Question


After fertilisation, the ________ divides repeatedly to give rise to a ball of cells.


Options:
A .   embryo
B .   zygote 
C .   sperm
D .   ovum
Answer: Option B
:
B

Fusion of the male and the female gamete, i.e., the sperm and the ovum, is called fertilisation. This results in the formation of a single-celled zygote. After fertilisation, the zygote divides repeatedly to give rise to a ball of cells. This ball of cells eventually develops into the various types of cells and tissues in an organism.



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