Question

Which is correct about morula?

• A. Less cytoplasm and less DNA than zygote
• B. More cytoplasm and more DNA than zygote
• C. Same amount of cytoplasm but much more DNA than zygote
• D. Same amount of cytoplasm and DNA as zygote

Answer 1

The correct option is C Same amount of cytoplasm but much more DNA than zygote

Amount of cytoplasm and DNA in morula

Morula contains the same amount of cytoplasm but much more DNA than zygote.

● The size of the morula is the same as that of the zygote, so it has the same amount of cytoplasm as that of the zygote.
● Morula has 8 to 16 blastomeres which means it has 8 to 16 nuclei with DNA which is much more than a zygote.

Final answer:

(d) Same amount of cytoplasm but much more DNA than zygote