Q. Read the following sentences about human reproduction:
A. The process of childbirth or parturition is induced by a complex neuroendocrine mechanism involving oxytocin.
B. The reproductive cycle of all primate mammals is called the menstrual cycle.
C. Most of the major organ systems of the foetus including genital organs are developed by the end of 24 weeks.
D. The second meiotic division of secondary oocyte is unequal and results in the formation of an ovum and a second polar body.
How many from the above is/are incorrect?

 1844  196 NTA AbhyasNTA Abhyas 2020Human Reproduction Report Error

Solution:

The reproductive cycle of all primate females is called menstrual cycle. In this cycle at the end menstruation or bleeding phase occurs.
In non-primate females another reproductive cycle occurs called oestrous cycle.
Most of the major organ systems of the foetus including genital organs are developed by the end of 12 weeks or first trimester or 3 months.