CBSE 2025, Set 1

Question

Edvaya · Accepted Answer

The correct answer is (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii). **SOLUTION** * **(a) Trophoblast:** The outer layer of the blastocyst that attaches to the endometrium **(iv)**. * **(b) Implantation:** The process of embedding the blastocyst into the uterine endometrium **(i)**. * **(c) Inner cell mass:** The inner group of cells in the blastocyst that will differentiate into the embryo proper **(ii)**. * **(d) Morula:** The solid mass of cells (embryo) containing 8 to 16 blastomeres **(iii)**. The correct match is **(a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)**.

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Biology > Reproduction And Genetics > Human Reproduction

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Column-I	Column-II
(a) Trophoblast	(i) Embedding of blastocyst in the endometrium
(b) Implantation	(ii) Group of cells that would differentiate as embryo
(c) Inner cell mass	(iii) Embryo with 8-16 blastomeres
(d) Morula	(iv) Outer layer of blastocyst