Ovulation in a female with a 36 days cycle occurs between:
A. 14th-18th day
B. 30th-34th day
C. 20th-24th Day
D. 8th-12th day
Correct Answer: C. 20th-24th Day
Explanation:-
For a 36-day menstrual cycle, ovulation usually occurs about 14 days before the next expected period (because the luteal phase is constant at about 14 days).
So in a 36-day cycle:
36 − 14 = Day 22
Ovulation typically occurs between
Day 20 – Day 24
Correct answer:
C. 20th–24th Day
Explanation of Options
Option Description
A. 14th–18th day Too early for a 36-day cycle; appropriate for a 28-32 day cycle
B. 30th–34th day Too late; the luteal phase must still be ~14 days
C. 20th–24th day Correct based on the luteal phase calculation
D. 8th–12th day Very early; unlikely for any typical cycle
Key concept
The luteal phase is fixed at around 14 days, so regardless of total cycle length:
\text{Ovulation day} = \text{Cycle length} – 14
Other Options Details
Here is the explanation of all the options regarding “Ovulation in a female with a 36-day cycle occurs between”:
In a normal menstrual cycle, ovulation usually occurs 14 days before the next menstrual period, regardless of the total cycle length.
For a 36-day cycle: 36 - 14 = \mathbf{22nd \text{ day}}
Descriptions of the Options
A. 14th–18th day
- This range represents the fertile period in a woman with a 28-day cycle, not a 36-day cycle.
- Too early for ovulation in a 36-day cycle.
B. 30th–34th day
- This time is too late for ovulation.
- Ovulation does not usually occur so close to the next menstruation in any normal cycle.
C. 20th–24th day (Correct range)
- Ovulation in a 36-day cycle is expected around Day 22, so this option correctly represents the ovulatory period.
- This is the most fertile time.
D. 8th–12th day
- This is too early for ovulation in any typical cycle beyond 24–28 days.
- Fertilization is unlikely during these days for a 36-day cycle.
Correct Answer:
✔ C. 20th–24th day
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Writer: Vandita Singh, Lucknow (GS India Nursing Group)