IUDs are small objects made up of plastic or copper that are inserted in the uterine cavity. Which of the following statements are correct about IUDs ? Choose the most appropriate answer from the options given below:
- D only
- A, D and E only
- B and C only
- B and D only
Answer
(4) B and D only
Solution
As per NCERT, IUDs increase phagocytosis of sperms within the uterus, so A is incorrect.
The Cu ions released suppress sperm motility and the fertilising capacity of sperms, so B and D are correct.
The hormone-releasing IUDs, in addition, make the uterus unsuitable for implantation and the cervix hostile to the sperms, so C is incorrect.
IUDs are inserted by doctors or expert nurses in the uterus through the vagina and no surgery is needed, so E is incorrect.
∴ B and D are correct.
Answer: (4)