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Question: Answered & Verified by Expert
Select the correct explanation for the labels A, B, C and D.


BiologyHuman ReproductionAIIMSAIIMS 2015
Options:
  • A A represents the fertilised zygote.
  • B B represents the stage of morula formation.
  • C C represents the blastocyst.
  • D D represents the blastocyst implantation.
Solution:
1176 Upvotes Verified Answer
The correct answer is: D represents the blastocyst implantation.
In the given figure A represents fusion of male and female gametes, $B$ is 4 celled blastomere. $\mathrm{C}$ shows the morula stage, i.e., an embryo with 8 blastomeres and D is the blastocyst which gets implanted in the uterus.

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