Read the statements given below :
(i) The first movements of the foetus and appearance of hair on the head are usually observed during 5th months of pregnancy.
(ii) The structural and functional unit between developing embryo and the maternal body is called the umbilical cord .
(iii) At puberty , in female both ovaries contain about 60,000 –80,000 primary follicles .
Choose the correct statement from the above .

Options

A. i, ii, and iii
B. i and ii
C. ii and ii
D. only i

Answer

To solve the question, we need to evaluate each of the three statements provided and determine which one is correct.

### Step-by-Step Solution:

1. **Evaluate Statement (i)**:
- The first movements of the fetus and the appearance of hair on the head are usually observed during the 5th month of pregnancy.
- **Analysis**: This statement is generally accurate. The first fetal movements, known as "quickening," are typically felt around the 20th week (5th month) of pregnancy. Additionally, hair begins to appear on the fetus's head during this time.
- **Conclusion**: This statement is correct.

2. **Evaluate Statement (ii)**:
- The structural and functional unit between the developing embryo and the maternal body is called the umbilical cord.
- **Analysis**: This statement is incorrect. The umbilical cord connects the fetus to the placenta, which is the actual structural and functional unit that facilitates the exchange of nutrients, gases, and waste between the mother and the developing embryo.
- **Conclusion**: This statement is incorrect.

3. **Evaluate Statement (iii)**:
- At puberty, in females, both ovaries contain about 60,000 – 80,000 primary follicles.
- **Analysis**: This statement is also incorrect. At puberty, each ovary contains approximately 60,000 to 80,000 primary follicles, not both ovaries combined. Therefore, the statement misrepresents the number by implying it refers to both ovaries.
- **Conclusion**: This statement is incorrect.

### Final Conclusion:
- The only correct statement is (i). Therefore, the correct answer is the first statement.