What are the three aspects covered under family welfare ?

State whether the following statements are True (T) or False (F). If false, write the correct word for the one which is wrong.

(i) Some vitamin preparations prevent the release of the egg from the ovary.

(ii) Use of a condom for contraception is a barrier method.

(iii) IUDs prevent implantation of embryo in vagina.

(iv) Tubectomy is performed on females.

The statistical study of human population is :

1. Population density
2. Population growth
3. Demography
4. Population explosion

Surgical method of sterilization in women involves cutting and tying of :

1. Ureter
2. Fallopian tube
3. Uterus
4. Urethra