A) Absence of yolk
B) Presence of cavity
C) Absence of cavity
D) Presence of more amount of yolk
Correct Answer: C
Solution :
Morula is a solid mass of 32 to 64 cells which is formed due to cleavage of zygote. But the blastula is a structure with a cavity known as blastocoel. Hence, a morula differs from a blastula on the basis of obsence of cavity in it.
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