Q1 of 38 Page 175

What was directly responsible for the rapid rise of the world population in the twentieth century?

Use of antibiotics and prophylactic vaccinations was directly responsible f or the rapid rise of the world population in the twentieth century.

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1

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

(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 the embryo in the vagina. ………………………..


(iv) Tubectomy is performed on females. …………………………

 2

Write the full form of MTP. In what circumstances is it recommended?

MTP………………………………


Circumstances …………………………………

 2

Birth rate is the number of live births

 1

Give the technical term for the statistical study of a human population of a region.