On which of the following facts does the method of periodic abstinence is based?
Biology · Class 12 · CBSE — Reproductive Health
On which of the following facts does the method of periodic abstinence is based?
- Ovulation occurs on about the 14th day of menstruation.
- Ovum remains alive for about 1–2 days.
- Sperms survive for about 3 days.
- All of these
Answer
(D) All of these
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