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STD 12 - 2. human reproduction — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYSTD 12 - 2. human reproduction1 Mark
MCQ
When the ovulation is expected in a normal menstrual cycle?
  • A
    $10-17$ day of menstrual phase
  • ✓
    $12-14$ day of menstrual phase
  • C
    $10-20$ day of menstrual phase
  • D
    $6-7$ day of menstrual phase
✓

Answer

Correct option: B.
$12-14$ day of menstrual phase
b
Ovulation is expected to occur at the $12^{\text {th }}-14^{\text {th }}$ day of the menstrual cycle. Probable ova releasing day is $12-14$ day of menstrual phase, and sperm can live for $2-3$ days in female reproductive system. So, $10-17$ days are the most probable days for fertilisation. = $HEAT PERIOD$ Draw backs of periodic abstinence The effectiveness of this method is limited because only a few women have regular menstrual cycle and the actual time of ovulation can not be produced as the ovulation in humans occurs about $14$ days before the onset of the next menstruation

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