| Column-l | Column-II |
| A. Trophoblast | i. Embedding of blastocyst in the endometrium |
| B. Cleavage | ii. Group of cells that would differentiate as embryo |
| C. Inner cell mass | iii. Outer layer of blastocyst attached to the endometrium |
| D. Implantation | iv. Mitotic division of zygote |
- AA-ii, B-i, C-iii, D-iv
- ✓A-iii, B-iv, C-ii, D-i
- CA-iii, B-i, C-ii, D-iv
- DA-ii, B-iv, C-iii, D-i