This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Physiology & Histology, Subject name: Gynaecology & Obstetrics
Ovulation occurs: 
Select and explain. 
A. Before LH surge, B. After biphasic rise in body temperature, C. After ripening of follicle by FSH, D. Before estrogen peak
C: After ripening of follicle by FSH
Answer: C: After ripening of follicle by FSH 
Explanation: Ans. is c, i.e. After ripening of follicle by FSHThe question is very simple as ovulation occurs after LH surge and estrogen peak and because of ovulation there is biphasic rise in temperature.