NEET UG Environmental Issues — practice questions
40 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice NEET UG Environmental Issues in the app →A single species showing high diversity across its range illustrates which level?The Western Ghats having more amphibians than the Eastern Ghats illustrates:How many major causes of biodiversity loss make up the Evil Quartet?Which is named as the most important cause driving species to extinction?Conservation of a species in its own natural habitat is described as:How many biodiversity hotspots have recently been proposed for intensive protection?India having deserts, rain forests, mangroves and coral reefs illustrates:Species confined to one region and found nowhere else are described as:Which region harbours more species than temperate or polar areas?Taking threatened plants and animals out of their habitat into special care is:Which fish introduced into Lake Victoria caused a mass extinction of cichlids?Which historic convention was held in Rio de Janeiro in 1992?How many countries pledged commitment at the 2002 World Summit in Johannesburg?Whose conservative estimate places global species diversity at about seven million?Which hypothesis compares species in an ecosystem to rivets in an aeroplane?When a species goes extinct, those associated with it obligatorily also die out. This is:For species-area relationships across entire continents, the slope value lies in which range?Gametes of threatened species can be preserved for long periods using:A factory's smoke changes the air in an unwanted way. Anything causing such a change is a:A thermal power plant removes over 99 percent of dust from its exhaust using an:Cars with catalytic converters must use unleaded petrol because lead:Noise was added as an air pollutant when the Air Act of 1981 was amended in:By the end of 2002 all Delhi buses had switched from diesel to:The amount of biodegradable organic matter in sewage is estimated by measuring:Downstream of a sewage outlet, fish die because microbes consume the:Excess nutrients turn a pond green with free-floating algae. This is an:The water hyacinth, a lovely-flowered weed choking Indian waterways, is called the:DDT at 0.003 ppb in water reaches 25 ppm in fish-eating birds. This rise up the food chain is:High DDT in birds disturbs calcium metabolism and causes:The natural aging of a lake by nutrient enrichment is called:Open garbage dumps breed rats and flies. They were replaced by:A greenhouse warms up because its glass lets light in but:The two gases named as the main greenhouse gases are carbon dioxide and:Good ozone that shields us from UV lies in the:The refrigerant chemicals that destroy stratospheric ozone are:A single Cl atom keeps destroying ozone because it acts as a:The ozone hole appears each year above:The 1987 treaty to control ozone-depleting substances is the:The National Forest Policy of 1988 recommends what forest cover for the plains?In 1974 women of the Garhwal Himalayas hugged trees to stop contractors. This was the: