Which of the following statements is INCORRECT?
A. In IUDs, the released Cu ions increase sperm motility and fertilising capacity of sperms.
B. Multiload 375 is a copper releasing IUD.
C. Lippes loop is a non-medicated IUD.
D. LNG-20 is a hormone releasing IUD.
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → A only.
IUDs (intra uterine devices) are contraceptives placed in the uterus by a doctor or nurse. They are of three kinds: non-medicated, copper releasing and hormone releasing. The question asks which statement is incorrect.
A. In IUDs, the released Cu ions increase sperm motility and fertilising capacity of sperms. — An incorrect statement. Copper ions do the opposite. They suppress sperm motility and the fertilising capacity of sperms. This is the incorrect statement.
B. Multiload 375 is a copper releasing IUD. — A correct statement. CuT, Cu7 and Multiload 375 are the copper releasing IUDs.
C. Lippes loop is a non-medicated IUD. — A correct statement. Lippes loop releases neither copper nor hormones, so it is a non-medicated IUD.
D. LNG-20 is a hormone releasing IUD. — A correct statement. Progestasert and LNG-20 are the hormone releasing IUDs.
NCERT Extract:
Population Stabilisation and Birth Control – “… These Intra Uterine Devices are presently available as the non-medicated IUDs (e.g., Lippes loop), copper releasing IUDs (CuT, Cu7, Multiload 375) and the hormone releasing IUDs (Progestasert, LNG-20) (Figure 3.2). IUDs increase phagocytosis of sperms within the uterus and the Cu ions released suppress sperm motility and the fertilising capacity of sperms. The hormone releasing IUDs, in addition, make the uterus unsuitable for implantation and the cervix hostile to the sperms.”