NEET Previous Year Question
Which one of the following statements about morula in humans is correct?
Topic: NEET PYQ
Answer: A. Full step-by-step solution below.
- AIt has almost equal quantity of cytoplasm as an uncleaved zygote but much more DNA.
- BIt has far less cytoplasm as well as less DNA than in an uncleaved zygote.
- CIt has more or less equal quantity of cytoplasm and DNA as in uncleaved zygote.
- DIt has more cytoplasm and more DNA than an uncleaved zygote.
Correct answer: A
Solution
(a) During cleavage, the cytoplasm of the zygote is divided among blastomeres, so the total cytoplasm remains nearly the same, but repeated cell divisions increase the amount of DNA. Hence, morula has almost equal cytoplasm but more DNA than an uncleaved zygote.More Human Reproduction PYQs
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- Which one of the following statements about human sperm is correct?