Question

Question 43:
(a) What substances are contained (i) in oral pills, and (ii) in vaginal pills, used as contraceptives ? How do
they work ?
(b) How does copper-T prevent pregnancy ?
(c) Name the disease caused by HIV.

Lakhmir Singh Biology Class 10

Answer 1

◇These substance contain OESTROGEN OR PROGESTERONE , it prevents maturation of egg and controls births.

◇Copper ions prevent pregnancy by inhibiting the movement of sperm because the copper ion containing fluids are directly toxic to sperm .

◇HIV causes AIDS .

hope it helps u dear ^_^