Human embryo is a solid ball of $16-32$ cells by the end of . . . . . . day after fertilization.
- A$4^{\text{th}}$
- B$3^{\text{rd}}$
- C$5^{\text{th}}$
- D$6^{\text{th}}$
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Similar Questions
The process by which primary germinal layers are formed is called
$A$ post-gastrula embryo contains:
Easy
View SolutionThe shortest gestation period is seen in
Match the months listed in Column $I$ with the organogenesis of the foetus in Column $II$.
Column $I$ Column $II$ $(A)$ First month $(i)$ Separation of eyelids $(B)$ Second month $(ii)$ Hairs on head $(C)$ Fifth month $(iii)$ Heart $(D)$ Sixth month $(iv)$ Limbs and digits
| Column $I$ | Column $II$ |
| $(A)$ First month | $(i)$ Separation of eyelids |
| $(B)$ Second month | $(ii)$ Hairs on head |
| $(C)$ Fifth month | $(iii)$ Heart |
| $(D)$ Sixth month | $(iv)$ Limbs and digits |
Which extra-embryonic membrane prevents the embryo from drying out in the uterus in humans?
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