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Question

Mention whether the following statements are true (T) or false (F). Give reason in support of your answer. [5 MARKS]
(i) Cow was the first domesticated animal.
(ii) Rapidly growing industries favoured population rise.
(iii) Present human population growth is following arithmetic progression.
(iv) Birth rate (natality) is the number of live births per hundred people of population per decade.
(v) Tubectomy is a popular surgical method of contraception in human males.


Solution

Each Part: 1 Mark

(i) False. Dog was the first domesticated animal.
(ii) True. Rapidly growing industries made human life more and more comfortable, with greater opportunities of jobs and with more production of food. All this favoured population rise.
(iii) False. Present human population growth is following geometrical progression, more or less in a pattern of 1, 2, 4, 8, 16, ..... i.e. the numbers at each step are being multiplied.
(iv) False. Birth rate or natality is the number of live births per one thousand people of population per year.
(v) False. Tubectomy is a popular surgical method of contraception in human females. In this method, the abdomen is opened and the fallopian tubes (oviducts) are cut or ligated, i.e., tied with nylon thread to close the passage of the egg.

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