<prompt> In 29 days menstrual cycle ovulation takes place at?14th day15th day16th day17th day  <response>: ANSWER: B 15th dayREF: Ganongs 22nd ed p.434In a menstrual cycle the post ovulatory days remains constant, hence to calculate the day of ovulation substract 14 from the total days of cycle; i.e. in a 29 days cycle ovulation takes place on 15th day 29-14, 