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Question

Assertion (A): Intra uterine devices (IUDs) prevent fertilisation and pregnancy
Reason (R): The copper ions released inhibit ovulation


A
Both A and R are correct and R is the correct explanation of A
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B
Both A and R are correct and R is not the correct explanation of A
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C
A is correct but R is incorrect
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D
Both A and R are incorrect
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Solution

The correct option is C A is correct but R is incorrect
An intra uterine device (IUD), also known as intra uterine contraceptive device (IUCD or ICD), is a birth control device that is inserted into a woman's uterus through vagina to prevent fertilisation and pregnancy.

These intra uterine devices are presently available as the non-medicated IUDs (e.g., Lippes loop), copper releasing IUDs and the hormone releasing IUDs.

The copper ions released are toxic to the sperms and they suppress sperm motility and the fertilising capacity of sperms.

Therefore, A is correct but R is incorrect.

Biology

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