During embryonic development:
1. | the trophoblast cells help in the formation of the placenta and inner cell mass differentiates into the embryo |
2. | the trophoblast cells differentiate into the embryo and inner cell mass helps in the formation of the placenta |
3. | the trophoblast cells help in the formation of the placenta and both trophoblast cells and inner cell mass differentiate into the embryo |
4. | the trophoblast cells help in the formation of the placenta and differentiate into the embryo as well |
I: | In the later phase of pregnancy, a hormone called relaxin is also secreted by the ovary. |
II: | hCG, hPL and relaxin are produced in women only during pregnancy. |
1. | Only I is correct | 2. | Only II is correct |
3. | Both I and II are correct | 4. | Both I and II are incorrect |