Q175 / 180 · NEET 2026 (Cancelled) · Zoology
Match List I with List II related to embryonic development at various months of pregnancy :
List I List II A. The foetus movement starts and hair appears on the head I. $24$ weeks of pregnancy B. The foetus develops limbs and digits II. $20$ weeks of pregnancy C. The foetus develops external genital organs III. $8$ weeks of pregnancy D. The foetus body is covered with fine hair; eyelids separate and eyelashes are formed IV. $12$ weeks of pregnancy
Choose the correct answer from the options given below :
| List I | List II |
|---|---|
| A. The foetus movement starts and hair appears on the head | I. $24$ weeks of pregnancy |
| B. The foetus develops limbs and digits | II. $20$ weeks of pregnancy |
| C. The foetus develops external genital organs | III. $8$ weeks of pregnancy |
| D. The foetus body is covered with fine hair; eyelids separate and eyelashes are formed | IV. $12$ weeks of pregnancy |
Choose the correct answer from the options given below :
- AA-IV, B-II, C-III, D-I
- Correct answerBA-II, B-III, C-IV, D-I
- CA-III, B-II, C-IV, D-I
- DA-II, B-IV, C-III, D-I
Solution
According to the standard textbook on human reproduction:
By the end of the second month ($8$ weeks) of pregnancy, the foetus develops limbs and digits. Thus, B matches III.
By the end of $12$ weeks (first trimester), most of the major organ systems are formed, including well-developed external genital organs. Thus, C matches IV.
During the fifth month ($20$ weeks), the first movements of the foetus and the appearance of hair on the head are observed. Thus, A matches II.
By the end of about $24$ weeks (end of the second trimester), the body is covered with fine hair, eyelids separate, and eyelashes are formed. Thus, D matches I.
The correct matching is A-II, B-III, C-IV, D-I.
Answer: A-II, B-III, C-IV, D-I
By the end of the second month ($8$ weeks) of pregnancy, the foetus develops limbs and digits. Thus, B matches III.
By the end of $12$ weeks (first trimester), most of the major organ systems are formed, including well-developed external genital organs. Thus, C matches IV.
During the fifth month ($20$ weeks), the first movements of the foetus and the appearance of hair on the head are observed. Thus, A matches II.
By the end of about $24$ weeks (end of the second trimester), the body is covered with fine hair, eyelids separate, and eyelashes are formed. Thus, D matches I.
The correct matching is A-II, B-III, C-IV, D-I.
Answer: A-II, B-III, C-IV, D-I
Hence, the correct answer is option: 'B'.