Mention if the following statements are True (T) or False (F) :

(i) Placenta produces certain hormones. ………………………T/F

(ii) Amniotic fluid serves to provide oxygen to the foetus …………………. T/F

(iii) Heart and blood vessels have been formed by the end of five weeks of pregnancy. ……………. T/F

(iv) Mother’s blood flows into the foetus through placenta ……………….. T/F

(i) True.

Explanation: Placenta produces progesterone and oestrogen.

(ii) False

Explanation: Placenta provides oxygen to the foetus. Whereas amniotic fluids help in the protection of the foetus by serving as a cushion.

(iii) True

Explanation:

The circulatory system is observed at the end of five weeks of pregnancy.

(iv) False

Explanation: Mother’s blood flows into the foetus through the umbilical cord. The umbilical cord consists of 3 blood vessels - 2 arteries and 1 vein.