| Observe the diagram of various contraceptive methods used for birth control and answer the questions that follows. |
 |
| (ii) B prevents pregnancy by preventing |
A) fertilization
B) ovulation
C) implantation of fertilised egg
D) None of the above
Correct Answer: A
Solution :
[a] Cu- T [b] is an intrauterine copper releasing IUD. This device is inserted by doctors in the uterus through vagina. Cu ions that are released in the uterus suppress, sperm motility and the fertilizing capacity of the sperms. Thus, it prevents pregnancy by preventing fertilisation.
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