Question

Select the correct explanation for the labels A, B, C and D.

(a) A represents the fertilized zygote.

(b) B represents the stage of morula formation.

(c) C represents the blastocyst.

(d) D represents the blastocyst implantation.

Answer 1

Correct option (d) D represents the blastocyst implantation.

Explanation :

In the given figure A represents fusion of male and female gametes, B is 4 celled blastomere. C shows the morula stage, i.e., an ernbryo with 8 blastomeres and D is the blastocyst which gets implanted in the uterus.