2nd PUC Biology Series 8 December 3, 2020December 22, 2020wefru PUC Science 2nd Year Biology Series-8 quiz 4 Created on December 01, 2020 By wefru 2nd Puc Biology Series 8 TEST YOUR KNOWLEDGE OF SCIENCE 1 / 10 Q.71 MAB stands for mammals and biosphere mammals and biology programme man and biology programme man and biosphere programme. 2 / 10 Q.72 Formation of ozone hole is maximum over Europe Africa India Antarctica. 3 / 10 Q.73 Which of the following ecosystem has the highest gross primary productivity? mangroves rain forest grassland coral reef 4 / 10 Q.74 Phosphate pollution is caused by sewage and phosphate rock phosphate rock only sewage and agricultural fertilizers agricultural fertilizers only. 5 / 10 Q.75 Which of the following acts as “nature’s scavengers”? insects microorganisms man animals. 6 / 10 Q.76 . In desert grasslands, which type of animals are relatively more abundant? aquatic fossorial diurnal arboreal 7 / 10 Q.77 The supersonic jets cause pollution by the thinning of O2 layer O3 layer CO2 layer SO2 layer. 8 / 10 Q.78 Which one of the following organisms is used as indicator of water quality Azospirilluni Escherichia Biggiata Chlorella 9 / 10 Q.79 If there was no C02 in the earth’s atmosphere, the temperature of earth’s surface would be higher than the present dependent on the amount of oxygen in the atmosphere same as present less than the present. 10 / 10 Q.80 Plants such as Prosopis, Acacia and Capparis represent examples of tropical deciduous forests (b) s (c) d) evergreen forest grass lands thorn forests. Your score is The average score is 65% LinkedIn Facebook Twitter VKontakte 0% Restart quiz