Question

Select the option that correctly fills up the blanks in given paragraph.
After one month of pregnancy, the embryo's (i) is formed. By the end of the (ii) month of pregnancy, the fetus develops limbs and digits. By the end of (iii) , most of the major organ systems are formed, for example, the limbs and external genital organs are well-developed. By the end of (iv) the body is covered with fine hair, eye-lids separate, and eyelashes are formed.

• A. (i) - heart, (ii) - second, (iii) - first trimester, (iv) - second trimester
• B. (i) - heart, (ii) - second, (iii) - first month, (iv) - second month (c) (d)
• C. (i) - heart, (ii) - second, (iii) - first week, (iv) - second week
• D. (i) - heart, (ii) - fourth, (iii) - first trimester, (iv) - second trimester

Answer 1

Answer: (A)

(i) - heart, (ii) - second, (iii) - first trimester, (iv) - second trimester

The heart is the organ that is formed after one month of pregnancy. and the first sign of a developing fetus is the sound of the heartbeat. The end of the second month marks the development of the limbs and digits. The second trimester or after 12 weeks the major organ systems such as the limbs, external genitalia are formed. The second trimester or the end of 24 weeks is characterized by the development of the hair,eye-lids.

So, the correct option is '(i) - heart, (ii) - second, (iii) - first trimester, (iv) - second trimester'.