2nd PUC Biology Series 6 December 3, 2020December 22, 2020wefru PUC Science 2nd Year Biology Series-6 quiz 1 Created on December 01, 2020 By wefru 2nd Biology Series TEST YOUR KNOWLEDGE OF SCIENCE 1 / 10 Q.51 The Taj Mahal is threatened due to the effect o oxygen hydrogen chlorine sulphur-dioxide. 2 / 10 Q.52 In Minamata Bay Japan the animals which remained free from minamata disease, are dogsV cats pigs rabbits 3 / 10 Q.53 Which of the following pairs is a sedimentary type of biogeochemical cycle? phosphorus and nitrogen phosphorus and sulphur oxygen and nitrogen phosphorus and carbon dioxide. 4 / 10 Q.54 The toxic effect of carbon monoxide is due to its greater affinity for haemoglobin as compared to oxygen approximately by 200 times 1000 times 2 times 20 times 5 / 10 Q.55 Which of the following isotopes is most dangerous to Homosapiensl? phosphorus-32 strontium-90 caesium-137 Sulpher 123 6 / 10 Q.56 Which of the following is the most stable ecosystem? mountain ocean forest desert 7 / 10 Q.57 The primary succession refers to the development of communities on a forest clearing after devastating fire pond, freshly filled with water after a dry phase newly-exposed habitat with no record of earlier vegetation freshly cleared crop field 8 / 10 Q.58 A dental disease characterized by mottling of teeth is due to the presence of certain chemical element in drinking water. Which of the following is that element? fluorine boron mercury chlorine. 9 / 10 Q.59 Which of the following is the main factor of desertification? over-grazing tourism irrigated agriculture all of these 10 / 10 Q.60 Which one of the following pairs is correctly matched?V parasitism – intra-specific relationship stream lined body – aquatic adaptation. uricotelism – aquatic habitat (c) excessive perspiration – xeric adaptation stream lined body – aquatic adaptation Your score isThe average score is 50% LinkedIn Facebook Twitter VKontakte 0% Restart quiz