Sample Questions — Fertilisation and Implantation
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MCQ
What is the first cell formed after fertilisation called?
✅ Correct Answer: D
Fusion of male and female gametes forms the zygote.
MCQ
Why is it said that the sperm determines the sex of the baby?
✅ Correct Answer: B
Ovum always carries X; sperm can be X or Y. The chromosome it brings determines sex.
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MCQ
What determines the sex of the human embryo?
✅ Correct Answer: C
Sperm carries either X or Y; ovum always has X.
MCQ
Why are only 8–16 blastomeres present in the morula stage?
✅ Correct Answer: C
Morula is formed from early cleavage; further division forms blastocyst.
MCQ
Which structure implants in the uterine lining?
✅ Correct Answer: C
Blastocyst adheres to endometrium.
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