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Biology

(i) State any two harmful effects of noise pollution on human health.

(ii) Categorize the following activities as per the functions of the Red Cross Society and the WHO:

  1. To suggest quarantine measures to prevent spread of disease.
  2. Humanitarian services to victim of war.
  3. To educate people in accident prevention.
  4. To promote projects for research on disease.

(iii) Write any two major reasons for the population explosion in India.

(iv) State Mendel's Law of segregation

Pollution

ICSE 2014

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Answer

(i) Two harmful effects of noise pollution are:

  1. It lowers efficiency of work.
  2. It disturbs sleep and leads to nervous irritability.

(ii) The activities are categorized below:

  1. To suggest quarantine measures to prevent spread of disease. → WHO
  2. Humanitarian services to victim of war. → Red Cross
  3. To educate people in accident prevention. → Red Cross
  4. To promote projects for research on disease. → WHO

(iii) Two major reasons for the population explosion in India are —

  1. Desire for a male child.
  2. Illiteracy and Lack of awareness about birth control measures.

(iv) Law of Segregation (also called the law of purity of gametes) — The two members of a pair of factors separate during the formation of gametes. They do not blend but segregate or separate into different gametes. The gametes combine together by random fusion at the time of zygote formation.

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