UGC NET Environmental Science Mock - 2 - UGC NET MCQ

The habitat of deep-water corals, also known as cold-water corals, extends to deeper, darker parts of the oceans than tropical corals, ranging from near the surface to the abyss, beyond 2,000 meters (6,600 ft) where water temperatures may be as cold as 4°C (39°F) Like tropical corals, they provide habitat to other species, but deep-water corals do not require zooxanthellae to survive.

Statement 1 is correct.

Statement 2 is incorrect as for Biomagnification to occur, pollutant has to be Long lived, Mobile, Soluble in Fat and biologically active.

If it is short-lived, it will be broken down before it can become dangerous. If it is not mobile, it will get stick to one place only. If it is soluble in water, it will be washed away in excretion.

So in order to retain it must be fat soluble

Hydrogen (H₂) is the fuel of energy that is the most environment friendly. Many researchers are working on hydrogen operated vehicles. Hydrogen might be used as an alternative fuel for different vehicles.

The dominant source of pollution due to oxides of nitrogen (NOX) in urban areas is road transport.

Carbon cycle is biogeochemical cycle which exchanges carbon that gets released from ecosystems in shape of carbon dioxide gas which takes place in both plants and animals which breaks carbon organic molecules into carbon dioxide gas. Option A is correct as Volcanic action results in eruption of large amount of volcanic matter and carbon dioxide. Option B is correct as Respiration in humans and animals intakes oxygen and releases carbon dioxide. Option D is correct as Decay of organic matter results in production of carbon dioxide because of bacteria. Option C is incorrect as photosynthesis takes carbon dioxide and releases oxygen in air and did not add carbon dioxide in carbon cycle on planet Earth.

Agency of the names of translation experts

Hence, The correct answer is C.

Cataloguing codes will include bibliographic description

Hence, The correct answer is B.

D.O of mix = 
D.O. of mix = 10.55 ppm
Critical deficit of D.O. = Saturated D.O. of stream – D.O. of mix = 0.05 ppm

Hence, The correct answer is A.

Research is working in a scientific way to search for truth of any problem.

Hence, The correct answer is C.

The Convention on the Conservation of Migratory Species of Wild Animals came into force in 1983. The Secretariat of CMS that administers the Convention was established in the year 1984.

Hence option B is correct.

The objectives of the International Treaty on Plant Genetic Resources for Food and Agriculture are the conservation and sustainable use of all plant genetic resources for food and agriculture. It was established on 29 June 2004.

Hence option D is correct

The unit of pressure most commonly found of a surface weather map is: millibars or hectopascals.

Millibar (symbol mb or mbar) is a meteorological unit of pressure equal to one-thousandth of a bar. ... 1000 hPa are equal to 1000 mbar, which is equal to 750 mm of mercury in a barometric column, which is 0.987 of the average atmospheric pressure, which on global average is 1013 millibars or hectopascals.

Hence option B is correct.

In 1983 the then Prime Minister of India, Indira Gandhi, decided to abandon the Project. In the year of 1984, it was declared as a National Park with the project area included. In 1986, the Silent Valley was declared the core area in the Nilgiri Biosphere Reserve.

Hence option C is correct.

The Biodiversity Target was adopted in the year 2002 during the sixth Conference of the Parties to the Convention on Biological Diversity.

Hence option A is correct.

Some species of plants and animals are extremely rare and may occur only at a few locations are called endangered.

Hence option B is the correct answer.

Crop rotation enhances soil fertility.

Hence option A is the correct answer

The gas that shows the most variation from place to place and from time to time in the lower atmosphere Water vapour (H₂O).
Hence option C is the correct answer.

Warli painting is a style of tribal art mostly created by the tribal people from the North Sahyadri Range in Maharashtra, India.

Hence option C is the correct answer.

Sea urchins are small, spiny, globular animals that, with their close kin, such as sand dollars, constitute the class Echinoidea of the echinoderm phylum. Sea lions are sea mammals characterized by external ear flaps, long foreflippers, and ability to walk on all fours legs. Elephant seals are large mammals, oceangoing seals in the genus Mirounga.

Hence option B is the correct answer

Olive Ridley is a marine tortoise which shows the unique phenomenon "arribada".

Hence option A is the correct answer.

Allopatric is the species that occur in different geographical regions separated by special barriers.

Hence. The correct answer is A.

An autotroph or primary producer is an organism that produces complex organic compounds using carbon from simple substances such as carbon dioxide, generally using energy from light or inorganic chemical reactions.

Hence. The correct answer is D.

The first teak plantations were raised in Nilambur in 1842 by the British. H V Conolly, the Malabar District Collector during the British rule, was instrumental in planting teak in the entire Nilambur area, with the help of Chathu Menon, a forest officer. Now the plantation is named after Conolly.

Hence. The correct answer is B.

The concept was first introduced by Charles Elton, the pioneer British Ecologist. The bottom of an ecological pyramid is the broadest and is occupied the producers, which form the first trophic level.

Hence. The correct answer is D.

Addressing a major energy conference organised by the Royal Institute of International Affairs (Chatham House) in central London, he said about two-thirds of the world proven oil reserves are located in the Middle East.

Hence. The correct answer is C.

Herbivores are also known as plant eating animals or primary consumers.

Hence. The correct answer is B.

A Hawk that eats a frog is tertiary consumer.

Hence. The correct answer is D.

A poison used to kill rodents.

Hence. The correct answer is C.