The correct sequence of formation of following structures in the developing embryo is -
(A). Heart
(B). Hair on head
(C). Limbs and digits
(D). Eyelashes
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → (A), (C), (B), (D)
(A) Heart — first, formed after one month of pregnancy.
(C) Limbs and digits — second, by the end of the second month.
(B) Hair on head — third, during the fifth month.
(D) Eyelashes — last, by the end of about 24 weeks (second trimester).
NCERT Extract:
Pregnancy and Embryonic Development – …
