Human Reproduction Question 415
Question: Which distinguishes a morula from a blastula [MP PMT 1992]
Options:
A) Presence of more yolk
B) Absence of yolk
C) Presence of a cavity
D) Absence of a cavity
Show Answer
Answer:
Correct Answer: D
Solution:
In microlecithal eggs or alecithal eggs, the cleavage results in the production of closely packed blastomeres.
The stage in which solid mass of blastomeres appears is said to be morula, whereas blastula is hollow with a cavity known as blastocoel.