Q. 26 - Biology

Question

Major organs begin to develop during which part of human gestation? 

a. fertilization b. first trimester c. second trimester d. third trimester 

Step-by-Step Solution

Answer

The correct option is d. third trimester .

Step 1. Given ifnormation

The gestation period is divided into three equal periods or trimesters. During the first two to four weeks of the first trimester, nutrition and waste are handled by the endometrial lining through diffusion 

Step 2. Explanation

The correct option is d. third trimester .

The gestation period is divided into three equal periods or trimesters. 

As the trimester progresses, the outer layer of the embryo begins to merge with the endometrium, and the placenta forms. 

Internal organs and body structures begin to develop during the first trimester. By five weeks, limb buds, eyes, the heart, and liver have been basically formed. By eight weeks, the term fetus applies, and the body is essentially formed.