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STD 12 - 3. reproductive health — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYSTD 12 - 3. reproductive health1 Mark
MCQ
$Cu$ ions released from copperreleasingintrauterine devices $(IUDs)$
  • A
    make uterus unsuitable for implantation
  • B
    increase phagocytosis of sperms
  • ✓
    suppress sperm motility
  • D
    prevent ovulation.
✓

Answer

Correct option: C.
suppress sperm motility
c
(c) : Copper releasing $IUDs$ $(i.e., CuT, LNG­-20)$ are placed in the uterus of the females. They are an efficient birth control methods. Copper ions released by them suppress motility and fertilising capacity of the sperms.

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