Home › UP Board Class 12 › Biology › Reproductive Health › Copper ions released by an IUD act by suppressin…
Copper ions released by an IUD act by suppressing sperm:
AMigration
BMotility
CMaturity
DMutation
Answer & Solution
Correct answer: B. Motility
1. IUDs also raise phagocytosis of sperms in the uterus.
2. Copper ions add a second effect.
3. They suppress sperm motility and fertilising capacity.
_Source: NCERT Class 12 Biology, 'Reproductive Health'_
Related questions
Injecting a sperm directly into an ovum is known as:Transfer of an ovum to another female's fallopian tube is called:Transfer of an embryo with more than 8 blastomeres into the uterus is:Transfer of a zygote into the fallopian tube is called:Fertilisation outside the body is known as:Besides sexual contact, hepatitis-B and HIV can spread through shared:Which is listed as a sexually transmitted infection?Diseases transmitted through sexual contact are called: