Assertion: Zygote is converted into blastula by Cleavage.
Reason: Cleavage is a series of fast mitosis divisions of the zygote.
If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark A
If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark B
If Assertion is true statement but Reason is false, then mark C
If both Assertion and Reason are false statements, then mark D.
Cleavage is a series of rapid mitotic divisions of the zygote which convert the single celled zygote into a multicellular structure called blastula ( blastocyst).
Option a is the correct answer.