Question

During embryonic development, the body of the fetus is covered with fine hair by the end of

• A. First trimester
• B. Second trimester
• C. Third trimester
• D. None of the above

Answer 1

The correct option is B

Second trimester

The correct option is B.

Explanation of correct option:

1. The heart is developed after one month of pregnancy.
2. The limbs and fingers are formed by the end of the second month.
3. Many organs are formed at the end of twelve weeks i.e. the first trimester.
4. The hair in the head and movement of the fetus start in the fifth month of the pregnancy.
5. At the end of twenty-four weeks or the second-trimester body covers fine hair, and eyelashes also grow.

Explanation of incorrect options:

Option A:

1. The first two to the four-week of pregnancy are the first trimester.
2. It is the period of organogenesis, during which various organs develop.
3. The embryo develops into a fetus.
4. The endometrium is the source of its nutrition.

Option C:

1. The fetus becomes larger in size during the third trimester.
2. It weighs about three to four kilograms.
3. The uterus extends around it.

Final answer: During embryonic development, the body of the fetus is covered with fine hair by the end of the second trimester.