Ecosystem PYQs Set 4 (PDF)

Set 4 of 8 · Questions 91-120 of 211

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Mere Teacher · Previous Year Questions NEET Biology · Ecosystem · Set 4 (Q91-120)
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91. $Select the correct statement about biodiversity :-$ (1) $Western Ghats have a very high degree of species richness and endemism.$ (2) $Conservation of biodiversity is just a fad pursued by the developed countries$ (3) $The desert areas of Rajasthan and Gujarat have a very high level of desert animal species as well as numerous rare animals$ (4) $Large scale planting of Bt cotton has no adverse effect on biodiversity$ 92. $If an agricultural field is liberally irrigated for a prolonged period of time, it is likely to face problem of:$ (1) $Metal toxicity$ (2) $Alkalinity$ (3) $Acidity$ (4) $Salinity$ 93. $According to Robert May, the global species diversity is about :$ (1) $7 million$ (2) $1.5 million$ (3) $20 million$ (4) $50 million$ 94. $Which one of the following statements regarding photochemical smog is not correct?$ (1) $Photochemical smog is formed through photochemical reaction involving solar energy$ (2) $Photochemical smog does not cause irritation in eyes and throat.$ (3) $Carbon monoxide does not play any role in photochemical smog formation$ (4) $Photochemical smog is an oxidizing agent in character$ 95. $The biomass available for consumption by the herbivores and the decomposers is called :$ (1) $Gross primary productivity$ (2) $Net primary productivity$ (3) $Secondary productivity$ (4) $Standing crop$ 96. $World summit on sustainable Development (2002) was held in:-$ (1) $Argentina$ (2) $South Africa$ (3) $Brazil$ (4) $Sweden$ 97. $Exploration of molecular, genetic and species level diversity for novel products of economic importance is known as:$ (1) $Biopiracy$ (2) $Bioenergetics$ (3) $Bioremediation$ (4) $Bioprospecting$ 98. $Which of the following statements is not true?$ (1) $A single organism can feed at several trophic levels$ (2) $Detritivores feed at all trophic levels except the producer level$ (3) $Primary consumers are herbivores$ (4) $Energy pyramids of an ecosystem tend to diminish at higher trophic levels$ 99. $Red list contains data or information on :$ (1) $threatened species$ (2) $marine vertebrates only$ (3) $all economically important plants$ (4) $plants whose products are in international trade$ 100. $The thickness of the ozone in a column of air from the ground to the top of the atmosphere is measured in terms of :$ (1) $Swedberg units$ (2) $Monomeric units$ (3) $Dobson units$ (4) $Balton units$ 101. $Which of the following in sewage treatment removes suspended solids?$ (1) $Secondary treatment$ (2) $Primary treatment$ (3) $Sludge treatment$ (4) $Tertiary treatment$ 102. $Secondary sewage treatement is mainly a :-$ (1) $Physical process$ (2) $Mechanical process$ (3) $Chemical process$ (4) $Biological process$ 103. $Which one of the following will accelerate phosphorus cycle?$ (1) $Rain fall and storms$ (2) $Burning of fossil fuels$ (3) $Volcanic activity$ (4) $Weathering of rocks$ 104. $Identify the possible link ‘A’ in the following feed chain Plant \to insert \to Frog \to “ A”\to Eagle$ (1) $Rabbit$ (2) $Wolf$ (3) $Cobra$ (4) $Parrot$ 105. $The breakdown of detritus into smaller particles by earthworm is a process called$ (1) $Humification$ (2) $Fragmentation$ (3) $Mineralization$ (4) $Catabolism$ 106. $Biodiversity of a geographical region represents :$ (1) $Species endemic to the region$ (2) $Endangered species found in the region$ (3) $The diversity in the organisms living in the region.$ (4) $Genetic diversity present in the dominant species of the region.$ 107. $Which is the National Aquatic Animal of India?$ (1) $Gangetic shark$ (2) $River dolphin$ (3) $Blue whale$ (4) $Sea-horse$ 108. $Which one of the following statements cannot be connected to Predation?$ (1) $It might lead to extinction of a species$ (2) $Both the interacting species are negatively impacted$ (3) $It is necessitated by nature to maintain the ecological balance$ (4) $It helps in maintaining species diversity in a community$ 109. $Which of the following is considered a hotspot of biodiversity in India?$ (1) $Eastern Ghats$ (2) $Aravalli Hills$ (3) $Western Ghats$ (4) $Indo-Gangetic Plain$ 110. $Which scientist proposed 'Rivet popper hypothesis' related to biodiversity and Ecosystems?$ (1) $Alexander von Humboldt$ (2) $Paul Ehrlich$ (3) $David Tilman$ (4) $Tansley$ 111. $Biochemical Oxygen Demand (BOD) in a river water:-$ (1) $Increases when sewage gets mixed with river water$ (2) $Remains unchanged when algal bloom occurs$ (3) $Has no relationship with concentration of oxygen in the water$ (4) $Gives a measure of salmonella in the water$ 112. $A scrubber in the exhaust of a chemical industrial plant removes :-$ (1) $gases like sulphur dioxide$ (2) $particulate matter of the size 5 micrometer or above$ (3) $gases like ozone and methane$ (4) $particulate matter of the size 2.5 micrometer or less$ 113. $The Indian Rhinoceros is a natural inhabitant of which one of the Indian states?$ (1) $Uttar Pradesh$ (2) $Himachal Pradesh$ (3) $Assam$ (4) $Uttarakhand$ 114. $Which one of the following population interactions is widely used in medical science for the production of antibiotics?$ (1) $Commensalism$ (2) $Mutualism$ (3) $Parasitism$ (4) $Amensalism$ 115. $A species which was introduced for ornamentation but has become a troublesome weed in India :$ (1) $Parthenium hysterophorus$ (2) $Eichhornia crassipes$ (3) $Prosopis juliflora$ (4) $Trapa spinosa$ 116. $The slow rate of decomposition of fallen logs in nature is due to their :-$ (1) $Anaerobic environment around them$ (2) $Low cellulose content$ (3) $Low moisture content$ (4) $Poor nitrogen content$ 117. $Tree planting helps reduce global warming as trees:$ (1) $Give out O_{2}$ (2) $Create shade thereby cooling the ground$ (3) $Can sequester C O_{2}$ (4) $Can respire in light$ 118. $Steps taken by the Government of India to control air pollution include :-$ (1) $Use of non-polluting Compressed Natural Gas (CNG) only as fuel by all buses and trucks$ (2) $Compulsory mixing of 20% ethyl alcohol with petrol and 20% biodiesel with diesel$ (3) $Compulsory PUC (Pollution Under Control) certification of petrol driven vehicles which tests for carbon monoxide and hydrocarbons$ (4) $Permission to use only pure diesel with a maximum of 500 ppm sulphur as fuel for vehicles$ 119. $The highest DDT concentration in aquatic food chain shall occur in :-$ (1) $crab$ (2) $eel$ (3) $phytoplankton$ (4) $seagull$ 120. $Which one of the following is related to Exsitu conservation of threatened animals and plants?$ (1) $Biodiversity hot spots$ (2) $Amazon rainforest$ (3) $Himalayan region$ (4) $Wildlife safari parks$