Question

Complete the following paragraph by selecting the correct options for the blanks A, B and C.
$..........A.........$ is the structural and functional unit between the embryo and the maternal body. It is connected to the embryo by $...........B.............$ It also acts as an $..........C.........$ tissue and secretes many hormones essential for maintaining pregnancy.

• A. A: placenta, B: chorionic villi, C: endocrine
• B. A: placenta, B: umbilical cord, C: endocrine
• C. A: placenta, B: umbilical cord, C: exocrine
• D. A: placenta, B: chorionic villi, C: exocrine

Answer 1

Answer: (B)

Placenta is the structural and functional unit between the embryo and the maternal body. It is responsible for transportation of essential nutrients and gases to the foetus and also the removal of foetal waste matter. It is connected to the embryo by an umbilical cord. It also acts an endocrine tissue and secretes many hormones like HCG, progesterone, HPL, etc. which are essential for maintaining pregnancy.