HSSC TGT Music Date 30/4/2023 Evening ShiftTotal Questions: 501. Which of the following serves as the source of carbon in plants?(a) CO₂ of carbonate rocks(b) Atmospheric CO₂(c) Fossil fuel(d) All of the above(e) UnattemptedCorrect Answer: (b) Atmospheric CO₂2. The pyramid of biomass will be inverted in the ecosystem of:(a) Forests(b) Ponds(c) Grasslands(d) Dry lands(e) UnattemptedCorrect Answer: (b) Ponds3. We and our surroundings together are called:(a) Environment(b) Atmosphere(c) Lithosphere(d) Hydrosphere(e) UnattemptedCorrect Answer: (a) Environment4. In the atmosphere, what carry/carries air pollutants to other places and other countries?(a) Waves(b) Prevailing winds(c) Water(d) Sunlight(e) UnattemptedCorrect Answer: (b) Prevailing winds5. In a food chain, the largest population is that of:(a) Producers(b) Primary consumers(c) Decomposers(d) Secondary consumers(e) UnattemptedCorrect Answer: (a) Producers6. Denitrification in sewage treatment systems requires:(a) The bubbling of oxygen into waste sewage(b) The addition of water to waste(c) An anaerobic environment(d) An aerobic environment(e) UnattemptedCorrect Answer: (c) An anaerobic environment7. The hydronium ions of acid rain mobilize toxins such as:(a) Iron(b) Magnesium(c) Aluminium(d) None of these(e) UnattemptedCorrect Answer: (c) Aluminium8. The term 'Ecosystem' was coined by:(a) A. G. Tansley(b) E. Haeckel(c) Reiter(d) R. Lindeman(e) UnattemptedCorrect Answer: (a) A. G. Tansley9. Why is recycled paper banned for use in food containers?(a) Because it creates a lot of space(b) Because it creates contamination(c) Because paper can be used only one time(d) Because paper is very thick and can't cover the food containers(e) UnattemptedCorrect Answer: (b) Because it creates contamination10. Which day is celebrated as the 'Earth Day'?(a) 22nd April(b) 5th June(c) 24th October(d) 21st July(e) UnattemptedCorrect Answer: (a) 22nd AprilSubmit Quiz12345Next »
