2nd PUC Biology Series 1 December 3, 2020December 22, 2020wefru PUC Science 2ndYear Biology Series-1 quiz 3 Created on December 01, 2020 By wefru Biology Series 1 TEST YOUR KNOWLEDGE OF SCIENCE 1 / 10 Q1.Acid rains are produced by excess NO2 and SO2 from burning fossil fuels excess production of NH3 by industry and coal gas excess release of carbon monoxide by incomplete combustion excess formation of CO2 by combustion and animal respiration. (1988, 89) 2 / 10 Q2. Which one is not a pollutant normally? hydrocarbon carbon dioxide carbon monoxide carbon monoxide 3 / 10 Q.3 Upper part of sea/aquatic ecosystem contains plankton nekton plankton and nekton benthos 4 / 10 Q.4Competition for light, nutrients and space is most severe between closely related organism growing in different niches closely related organisms growing in the same area/niche distantly related organisms growing in the same habitat DIstantly related organisms growing in different niches. (1988) 5 / 10 Q.5A mutually beneficial association necessary for survival of both partners is mutualism/symbiosis commensalism amensalism both A and B. 6 / 10 Q.6 What is true of ecosystem? primary consumers are least dependent upon producers secondary consumers are the largest and most powerful. primary consumers out-number producers (c) producers are more than primary consumers ( producers are more than primary consumers 7 / 10 Q.7 in an ecosystem, which one shows one-way passage free energy carbon nitrogen potassium 8 / 10 Q.8 Green house effect is warming due to infra-red rays reaching earth ozone layer of atmosphere increase in temperature due to increase in carbon dioxide concentration of atmosphere moisture layer in atmosphere 9 / 10 Q.9 Soil conservation is conversion of sterile soil into fertile one erosion of soil aeration of soil protection against loss. 10 / 10 Q.10 The relation between algae and fungi in lichen is symbiosis parasitism commenalism protocooperation. Your score is The average score is 23% LinkedIn Facebook Twitter VKontakte 0% Restart quiz
