Question

Study the diagram given below and then answer the questions that follow :

(i) Name the parts labelled 1 and 2. State the function of each part. 

(ii) State any one function of the amniotic fluid. 

(iii) What’ is the role of the umbilical cord in the development of the foetus ? 

(iv) Name the part in the diagram which is endocrine in nature.

Answer 1

(i) Part labelled 1: Placenta: It helps in the nutrition, excretion and respiration of the embryo. 

Part labelled 2: Chorion: It forms the placenta. 

(ii) Amniotic fluid acts as a cushion for the embryo and protect it from jerks or mechanical shocks.

(iii) Umbilical cord contains blood vessels and connects the placenta with the foetus. It means it helps in providing nutrition to the embryo and O₂ to foetus and removes CO₂ and excretory wastes from foetus blood to maternal blood. 

(iv) Endocrine part of this diagram is ‘placenta’.