Question

In Human beings, at the end of 12 weeks (first trimester) of pregnancy, the following is observed :

(1) Movement of the foetus

(2) Eyelids and eyelashes are formed

(3) Most of the major organ systems are formed

(4) The head is covered with fine hair

Answer 1

Answer (3) Most of the major organ systems are formed

Sol. The correct answer is option (3). Early movements of foetus are evident around 20 weeks of human pregnancy. By the end of 24 weeks, eyelids separate and eyelashes are formed and the body is covered with fine hair.