(a) IUDs are said to be effective contraceptives. Name any two commonly used IUDs and write the mode of their actions.
(b) When is sterilisation advised to married couples ? How is it carried out in a human male and a female, respectively ?
a)Progestasert- It makes uterus unsuitable for implantation.
CuT- Cu ions suppress the sperm motility.
b) Sterilization advised for the male /female partner as a terminal method to prevent any more pregnancies.
In male: part of vas deferens is cut and tied (vasectomy)
In female: a small part of the fallopian tube is removed or tied up (tubectomy)