Environment & Ecology Mixed Quiz: Set 1

The correct answer is A, A. G. Tansley. The British botanist Arthur George Tansley used the word ecosystem in 1935 for a unit in which living organisms and their non-living surroundings are treated together as one system exchanging energy and matter. The idea is the foundation of modern ecology.

Option B, Charles Darwin, is remembered for the theory of evolution by natural selection, set out in his work on the origin of species. Option C, Raymond Lindeman, gave the ten per cent law of energy transfer in 1942 and is the name to remember for energy flow, not for the term itself. Option D, Charles Elton, worked on food chains and ecological pyramids, and the pyramid of numbers is often named after him. These four names are regularly offered together in this question.

The correct answer is A, The International Union for Conservation of Nature. The Invasive Species Specialist Group (ISSG) is one of the expert groups of the IUCN's Species Survival Commission, and it manages the Global Invasive Species Database. The ISSG is a network of scientists and policy experts that gathers information on alien species that spread and harm native wildlife, and it also compiled the well-known list of '100 of the World's Worst Invasive Alien Species'. The IUCN, founded in 1948 and based at Gland in Switzerland, also publishes the Red List of Threatened Species. Invasive plants such as Lantana, water hyacinth and Prosopis juliflora are a major threat to Indian forests and wetlands. Option B is wrong because UNEP runs environmental programmes and conventions but not this specialist group. Option C is wrong because the World Commission on Environment and Development, the Brundtland Commission, is known for its 1987 report 'Our Common Future'. Option D is wrong because WWF is a separate conservation NGO. Exam tip: IUCN means the Red List, the Species Survival Commission and the invasive species database.

The correct answer is A, 1 and 4. Valmiki National Park and Bhimbandh Wildlife Sanctuary are both in Bihar, while the other two are in other States. Valmiki National Park, with its tiger reserve, lies in West Champaran district in the far north-west of Bihar, along the Nepal border, where it adjoins Nepal's Chitwan National Park. It takes its name from the sage Valmiki, whose ashram is believed to have stood in this forest. Bhimbandh Wildlife Sanctuary lies in Munger district in south Bihar and is known for its hot springs. Option B is wrong because both Dudhwa and Gajner are outside Bihar. Option C is wrong because Gajner Wildlife Sanctuary is near Bikaner in the Thar desert of Rajasthan. Option D is wrong because Dudhwa National Park is in Lakhimpur Kheri district of Uttar Pradesh, famous for its swamp deer. Exam tip: Valmiki is in West Champaran in north Bihar, Bhimbandh in Munger in south Bihar; Dudhwa is Uttar Pradesh and Gajner is Rajasthan.

The correct answer is A, 1982. The Ramsar Convention came into force for India on 1 February 1982, the date on which India's accession took effect. The treaty itself was signed on 2 February 1971 in the Iranian city of Ramsar, on the Caspian Sea, and came into force internationally in 1975; 2 February is therefore observed as World Wetlands Day. It is the only global convention devoted to one type of ecosystem, and sites listed under it are called Ramsar sites or Wetlands of International Importance. India's first two, Chilika Lake in Odisha and Keoladeo National Park in Rajasthan, were designated on 1 October 1981, just before the convention took effect for the country. So keep three years apart: 1971 signed, 1975 in force worldwide, 1982 in force for India. B, 1980, is the year of the Forest (Conservation) Act, not Ramsar. C, 1989, and D, 1990, have no link with the convention in India. Exam tip: Ramsar 1971, wetlands, Iran; India joined 1982; Chilika and Keoladeo were first.

The correct answer is B, 1973. Project Tiger was launched on 1 April 1973 by the Government of India under Prime Minister Indira Gandhi, from Jim Corbett National Park in Uttarakhand, to save the Bengal tiger and its habitat. It began with nine tiger reserves, including Corbett, Kanha, Bandipur, Ranthambore, Sundarbans and Manas, and the network has since grown to more than fifty. Each reserve has a core area free of human activity and a buffer zone around it. Since 2005 the project is run by the National Tiger Conservation Authority, a statutory body under the Wildlife (Protection) Act, and the tiger census is done every four years. A, 1985, is not linked to the tiger programme. C, 1972, is the year of the Wildlife (Protection) Act, the law that came a year before the project and is often confused with it. D, 1970, is when India banned tiger hunting. Exam tip: 1970 hunting ban, 1972 Wildlife Act, 1973 Project Tiger, 1992 Project Elephant.

The correct answer is B, Oxygen. A greenhouse gas is one whose molecules absorb the long-wave infrared radiation given off by the warm surface of the Earth and send part of it back, keeping the planet about 33 degrees Celsius warmer than it would otherwise be. Such absorption needs molecules made of three or more atoms, or of two different atoms, that can vibrate in the right way. Oxygen (O2) and nitrogen (N2), which together make up 99 percent of the air, are made of two identical atoms, do not absorb infrared radiation and therefore are not greenhouse gases, even though they are the most abundant gases. A, Water vapour, is the largest natural contributor to the greenhouse effect. C, Carbon dioxide, is the main greenhouse gas added by humans through burning coal, oil and gas, and it is the reference gas for global warming potential. D, Methane, traps about 28 times more heat than carbon dioxide over a century and comes from paddy fields, cattle and landfills. Exam tip: the main greenhouse gases are water vapour, CO2, methane, nitrous oxide, ozone and CFCs; N2 and O2 are not.

The correct answer is B, greenhouse gases emission. The Kyoto Protocol, adopted at Kyoto, Japan on 11 December 1997 under the UN Framework Convention on Climate Change, was the first treaty to set binding targets for cutting emissions. It came into force on 16 February 2005 and asked industrialised countries to cut their greenhouse gas emissions by an average of about 5 per cent below 1990 levels during 2008 to 2012. It covered six gases, including carbon dioxide, methane and nitrous oxide, and created market tools such as the Clean Development Mechanism, which let projects in countries like India earn carbon credits. India ratified it in 2002 but, as a developing country, had no binding target. A is wrong, because cutting poverty is the aim of goals such as the UN Sustainable Development Goals, not Kyoto. C is wrong, because nuclear arms are dealt with by treaties like the Non-Proliferation Treaty of 1968. D is wrong, because farm subsidies fall under the WTO's Agreement on Agriculture. Exam tip: Kyoto 1997, in force 2005, binding cuts for rich nations; Paris 2015, pledges from all nations.

The correct answer is D, Forest Act 1878. The Indian Forest Act of 1878 created the three classes of reserved, protected and village forests. British interest in Indian forests grew as the railways and shipbuilding needed huge amounts of timber. The Imperial Forest Department was set up in 1864 with Dietrich Brandis as the first Inspector General of Forests, and the first Indian Forest Act followed in 1865. That Act was soon found too weak, so the 1878 Act replaced it, giving the state firm control over forest land and sharply cutting down villagers' customary rights, above all in reserved forests. Its successor, the Indian Forest Act, 1927, kept the same three classes and is still the main forest law. Option A is wrong because 1864 is the year the Forest Department was created, not a classification law. Option B is wrong because the 1865 Act only began state control and did not create the three classes. Option C is wrong because 1866 is not linked with this classification at all. Exam tip: 1864 department, 1865 first Act, 1878 three classes, 1927 Act still in use.

The correct answer is D, air pollution. Lichens are used as bio-indicators of air quality because they are extremely sensitive to sulphur dioxide and other gases in the air. A lichen is a partnership of a fungus and an alga (or cyanobacterium) living together; it has no roots and takes water and minerals straight from the air, so pollutants build up in it quickly. That is why lichens grow well on trees and rocks in clean hill areas but disappear from the centres of polluted cities, and scientists map their presence to judge how clean the air is. A is wrong because gas pollution is not a separate category; the gases concerned are part of air pollution. B is wrong because water pollution is judged with indicators such as coliform bacteria, BOD and algal blooms. C is wrong because soil pollution is tracked through earthworms and soil tests, not lichens. Exam tip: lichen equals sulphur dioxide equals air pollution indicator.

The correct answer is B, Cadmium pollution. Itai-itai disease is long-term cadmium poisoning, first noticed around 1912 in the Toyama region of Japan, where mines upstream released cadmium into the Jinzu river and it built up in the rice and water used by villagers. Cadmium damages the kidneys and makes bones soft and brittle, so patients suffered repeated fractures and severe pain in the spine and joints; the name means it hurts, it hurts in Japanese. It became one of the four big pollution diseases of Japan. Option A is wrong because mercury pollution causes Minamata disease, also from Japan, which spread through eating fish from a bay polluted with methylmercury. Option C is wrong because arsenic in groundwater causes arsenicosis, with skin lesions and cancers, as seen in West Bengal and Bangladesh. Option D is wrong because too much nitrate in drinking water causes blue baby syndrome, or methaemoglobinaemia, in infants. Exam tip: cadmium–itai-itai, mercury–Minamata, nitrate–blue baby, fluoride–fluorosis.

The correct answer is A, (d) and (e). Sulphur dioxide and nitric oxide are the gases behind acid rain. When coal, petrol and diesel are burnt in power plants, factories and vehicles, they release sulphur dioxide and oxides of nitrogen such as nitric oxide. These gases dissolve in the water droplets of clouds and form sulphuric acid and nitric acid, which then come down with the rain. Acid rain harms crops, soil, lakes and forests, and it eats into buildings and monuments. NCERT's Class 8 science book describes how acid rain corrodes the white marble of the Taj Mahal at Agra, a damage called marble cancer, with industries around Agra and the Mathura refinery among the sources. B is wrong because nitrogen and oxygen are the main, harmless gases of the air. C is wrong because oxygen and ozone do not form the acids that fall as acid rain. D is wrong because it pairs sulphur dioxide with ozone, which is not a cause of acid rain. Exam tip: acid rain, sulphur dioxide and nitrogen oxides; marble cancer, the Taj Mahal.

The correct answer is A, Carbon captured by oceans and coastal ecosystems. Blue carbon is the carbon stored by marine and coastal ecosystems, especially mangroves, salt marshes and seagrass meadows. These plants take in carbon dioxide, and because their waterlogged soils have little oxygen, dead matter decays slowly and the carbon stays locked in the sediment for hundreds or even thousands of years. Area for area, they can store several times more carbon than tropical forests, which is why protecting the Sundarbans and India's seagrass beds counts as climate action. When these habitats are cleared, the stored carbon goes back into the air. Option B is wrong because carbon held in forest biomass and farm soils is called green carbon. Option C is wrong because carbon in petroleum and natural gas is fossil carbon, which is released as carbon dioxide when burnt. Option D is wrong because carbon dioxide in the air is simply atmospheric carbon, not stored carbon. Exam tip: blue carbon means coasts and oceans, green carbon means forests and soils.

The correct answer is B, Endangered species. The Red Data Book is the source book that keeps a record of endangered animals, plants and fungi, so that governments and conservationists know which living species face the greatest risk of dying out. It is linked to the Red List prepared by the International Union for Conservation of Nature (IUCN), which was founded in 1948 and has its headquarters at Gland in Switzerland. Species at risk are placed in categories such as Critically Endangered, Endangered and Vulnerable, which together are called threatened species. Many countries, including India, also prepare their own Red Data Books for local species, and the Botanical Survey of India compiles one for Indian plants. Option A is wrong because the book is meant to help save living species; extinct species cannot be saved and are not its main record. Option C is wrong because common species are not at risk. Option D is wrong because invasive species, such as water hyacinth, are harmful newcomers and are tracked in separate lists. Exam tip: Red Data Book means endangered species; IUCN is at Gland, Switzerland, founded 1948.

The correct answer is D, 29th July. International Tiger Day, also called Global Tiger Day, is observed every year on 29 July. It was started in 2010 at the Tiger Summit held in St Petersburg, Russia, where the thirteen tiger-range countries promised to double the number of wild tigers by 2022. The day spreads awareness about the loss of tiger habitat and poaching. India is home to about three-fourths of the world's wild tigers; it launched Project Tiger on 1 April 1973 from Jim Corbett National Park, and the National Tiger Conservation Authority was set up in 2005. The tiger is India's national animal and the results of the tiger census are usually released around this day. A is wrong because 12 May is International Nurses Day, the birthday of Florence Nightingale. B is wrong because 10 January is World Hindi Day. C is wrong because 5 November is World Tsunami Awareness Day. Exam tip: 29 July Tiger Day (St Petersburg 2010); Project Tiger 1973; 12 August is World Elephant Day.

The correct answer is A, Refuse. The 3 R's of waste management are Reduce, Reuse and Recycle; Refuse is not one of them. Reduce means creating less waste in the first place, such as buying fewer packaged goods and switching off lights to save power. Reuse means using a thing again, like refilling a bottle or turning old clothes into bags. Recycle means sending waste such as paper, glass, metal and plastic to be made into new products. NCERT gives the three in this order, and the order matters: reducing is the best option and recycling the last resort because it still uses energy. Some newer lists add Refuse and Repurpose to make 5 R's, but the paper asks about the 3 R's. B is wrong because recycling is one of the three. C is wrong because reducing is the first R. D is wrong because reuse is the second R. Exam tip: 3 R's = Reduce, Reuse, Recycle, in that order of preference.

The correct answer is C, Rachel Carson. Rachel Carson, an American marine biologist and writer, published Silent Spring in 1962. She showed how synthetic pesticides, above all DDT, were killing birds, fish and insects far beyond the fields where they were sprayed, and how these chemicals build up in food chains, becoming more concentrated at each level, a process now called biomagnification. The title imagines a spring with no birdsong because the birds have been poisoned. The book stirred public opinion and helped lead to the creation of the US Environmental Protection Agency in 1970 and a ban on most uses of DDT in the USA in 1972. Option A is wrong because Carolyn Merchant is an environmental historian known for The Death of Nature (1980). Option B is wrong because Karl Marx wrote Das Kapital and the Communist Manifesto, works on economics and politics. Option D is wrong because no writer of that name is linked to this book. Exam tip: Silent Spring 1962 (Rachel Carson, DDT), The Limits to Growth 1972 (Club of Rome), Our Common Future 1987 (Brundtland Report).

The correct answer is A, producers. Green plants make their own food from carbon dioxide and water by photosynthesis, using the energy of sunlight, so they are also called autotrophs. They form the first trophic level, and all other organisms in the ecosystem depend directly or indirectly on the food they prepare.

Option B, primary consumers, are the herbivores that feed on plants, such as the grasshopper, the deer and the cow. Option C, decomposers, are bacteria and fungi, which break down dead bodies and waste and return the nutrients to the soil. Option D, secondary consumers, are the carnivores that eat herbivores, such as the frog in the chain grass, grasshopper, frog, snake, hawk. Fix the order of that chain in your mind, since questions often ask for the level of one organism in it.

The correct answer is A, Madhya Pradesh. Kanha Tiger Reserve lies in the Mandla and Balaghat districts of Madhya Pradesh, in the Maikal hills at the eastern end of the Satpura range. It was among the first nine tiger reserves created when Project Tiger was launched in 1973. Kanha is best known for saving the hard-ground barasingha, a swamp deer that had almost died out and is now the state animal of Madhya Pradesh. Its open sal forests and grassy meadows make it one of the best places in India to see tigers in the wild. Madhya Pradesh's other well-known tiger reserves include Bandhavgarh, Panna, Pench and Satpura. B is wrong because Karnataka's famous tiger reserves are Bandipur and Nagarhole. C is wrong because Odisha's main tiger reserve is Similipal. D is wrong because Maharashtra's best-known tiger reserves are Tadoba-Andhari and Melghat. Exam tip: Kanha = Madhya Pradesh = barasingha; one of the first nine Project Tiger reserves of 1973.

The correct answer is A, Cold Desert. The Cold Desert Biosphere Reserve in the Lahaul and Spiti region of Himachal Pradesh was notified in 2009 as India's 16th biosphere reserve. It covers the Pin Valley National Park, the Kibber Wildlife Sanctuary and the high-altitude wetlands of Chandratal and Sarchu, a trans-Himalayan landscape above 3,000 metres that gets very little rain. Its wildlife includes the snow leopard, Himalayan ibex, red fox, blue rock pigeon and the lammergeier or bearded vulture, the bird that drops bones from a height to eat the marrow. Option B is wrong because Seshachalam, in Andhra Pradesh and famous for red sanders, followed in 2010 as the 17th reserve. Option C is wrong because Agasthyamalai, on the Kerala and Tamil Nadu border, was notified in 2001. Option D is wrong because Dehang-Debang in Arunachal Pradesh dates from 1998. Exam tip: the sequence at the end of the list is Cold Desert 2009 (16th), Seshachalam 2010 (17th), Panna 2011 (18th); the first was Nilgiri in 1986.

The correct answer is A, 1 only. Statement 1 is true and statement 2 is false. Race to Zero is a global campaign backed by the United Nations and launched in 2020, ahead of the COP26 climate talks in Glasgow. It rallies businesses, cities, regions, investors and universities to take rigorous action to halve global emissions by 2030 and reach net-zero emissions by 2050 at the latest, in line with the Paris Agreement aim of limiting warming to 1.5 degrees Celsius. Building momentum for a shift to a decarbonised economy is exactly its aim, so statement 1 is correct. Statement 2 is wrong: the zero in the name means net-zero carbon emissions, not a zero-sum game, where one side's gain equals the other side's loss; climate action is meant to benefit everyone. B is wrong, because statement 2 is the false one. C is wrong, because it accepts the false zero-sum statement. D is wrong, because statement 1 correctly describes the campaign. Exam tip: Race to Zero, UN-backed, 2020, halve emissions by 2030, net zero by 2050.