Environmental Science MCQ (Multiple Choice Question) - Schoolingaxis.com

Environmental Science MCQ (Multiple Choice Question)

 Que- In India, tropical evergreen forests occur in 

a. Himachal Pradesh  

b. Madhya Pradesh  

c. Assam  

d. Tamil Nadu 

Answer- Assam  

Explanation-  Small remnants of evergreen forest are found in Odisha state.[D] Semi-evergreen forest is more extensive than the evergreen formation partly because evergreen forests tend to degrade to semi-evergreen with human interference.                      

Que- The state which constituted green bench 

a. Kerala  

b. Tamilnadu  

c. Assam  

d. Madhya Pradesh 

Answer- Tamilnadu  

Explanation-  The constitution of the Calcutta bench was followed by another in Chennai. On September 2,1996, while passing an interim order in the Tamil Nadu tanneries case, a full bench of the SC comprising Justices Kuldip Singh, Falzan-uddin and K Venkataswami asked the chief justice of the Chennai High Court to constitute a special green bench to deal with environmenal matters - including the tanneries case - in that state.                     

Que- The one-horned Rhinoceros is now restricted to which state? 

a. Maharashtra  

b. Gujarat  

c. Assam  

d. Uttar Pradesh 

Answer- Assam  

Explanation-  Today this survivor from the prehistoric times is found only in pockets in the north eastern state of Assam and in Nepal. In Assam, their Rhino habitat is limited to just two national parks - Kaziranga and Manas.                     

Que- What is symbiosis? 

a. Study of distribution of related species  

b. Association between members of same species  

c. Association between members of two species  

d. None 

Answer- Association between members of two species  

Explanation-  Symbiosis is any type of a close and long-term biological interaction between two different biological organisms, be it mutualistic, commensalistic, or parasitic. The organisms, each termed a symbiont, may be of the same or of different species.                     

Que- The indoor pollutant radon which is a radioactive gas causes   

a. lung cancer 

b. anemia 

c. hormone disorder 

d. cardiac arrest  

Answer- lung cancer 

Explanation-  The indoor pollutant radon which is a radioactive gas causes lung cancer.                     

Que- Hypothermia is most common in: 

a. Hot, humid weather 

b. Cold, wet weather 

c. Hot, dry weather 

d. Cold, dry weather 

Answer- Cold, wet weather 

Explanation-  Although hypothermia is most common in patients who are exposed to a cold environment, it can develop secondary to toxin exposure, metabolic derangements, infections, and dysfunction of the central nervous and endocrine systems.                     

Que- The earth is tilted at an angle of 23.5o with respect to the plane of its orbit around the sun. If the amount of tilt were increased to 40o, we would expect in middle latitudes: 

a. Hotter summers and colder winters than at present 

b. Cooler summers and milder winters than at present 

c. Hotter summers and milder winters than at present 

d. Cooler summers and colder winters than at present 

Answer- Hotter summers and colder winters than at present 

Explanation-  Hotter summers and colder winters than at present                     

Que- Which of the following is correctly matched? 

a. Butterfly - Camouflage 

b. Garden lizard -Mimicry 

c. House lizard -Autotomy 

d. None of these 

Answer- House lizard -Autotomy 

Explanation-  House lizard - Autotomy                      

Que- Flora is the  __________ life occurring in a particular region or time 

a. plant 

b. animal 

c. human 

d. microbial  

Answer- plant 

Explanation-  Flora is all the plant life present in a particular region or time, generally the naturally occurring (indigenous) native plants. The corresponding term for animal life is fauna. Flora, fauna, and other forms of life, such as fungi, are collectively referred to as biota.                     

Que- What is deforestation? 

a. Product of forest 

b. destruction of forest 

c. Forest Protection 

d. None 

Answer- destruction of forest 

Explanation-  Deforestation, clearance, clearcutting or clearing is the removal of a forest or stand of trees from land which is then converted to a non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban use. The most concentrated deforestation occurs in tropical rainforests.                     

Que- Lions are found in 

a. Western Ghats  

b. Corbett National Park  

c. Forests of Madhya Pradesh  

d. Gir forests 

Answer- Gir forests 

Explanation-  Nearly all wild lions live in sub-Saharan Africa, but one small population of Asiatic lions exists in India's Gir Forest. Asiatic lions and African lions are subspecies of the same species. Asiatic lions once prowled from the Middle East to India.                     

Que- Favorable morphological and physiological response to a change in environment is called 

a. Preadaptation  

b. Ecotyping  

c. Formation of ecophenes  

d. Acclimatisation 

Answer- Acclimatisation 

Explanation-  Acclimatisation is the process in which an individual organism adjusts to a change in its environment (such as a change in altitude, temperature, humidity, photoperiod, or pH), allowing it to maintain performance across a range of environmental conditions. Hence, the correct answer is 'Acclimatisation'.                     

Que- Which among the following is related to the word Mesoderm ? 

a. Anatomically advanced animals having all three germ layers 

b. No membrane-bound organelles, no peptidoglycan in cell walls, introns 

c. Forms blood and bone (leads to complex internal organs) 

d. Binomial system of classification  

Answer- Forms blood and bone (leads to complex internal organs) 

Explanation-  Forms blood and bone (leads to complex internal organs).                     

Que- Plantation produces around  __________ percentage of industrial woods. 

a. twenty 

b. thirty 

c. forty 

d. fifty  

Answer- forty 

Explanation-  Plantation produces around forty percentage of industrial woods.                     

Que- In a population, unrestricted reproductive capacity is called as 

a. carrying capacity 

b. biotic potential 

c. birth rate 

d. fertility rate 

Answer- biotic potential 

Explanation-  Biotic potential is defined as the physiological capacity of organisms to produce their offspring under natural conditions. It is also called reproductive potential. In nature, the biotic potential of organisms is enormous but all the organisms do not survive due to the lack of food and space.                     

Que- If there is no atmosphere, the colour of the sky will be  

a. white 

b. colourless 

c. blue 

d. black 

Answer- black 

Explanation-  If the Earth had no atmosphere then the sky would have looked dark. The original colour of the sky(or space) is black. Just the atmosphere of the Earth gives the colour white, blue and dark blue.                     

Que- _________ is the study that deals with the interaction of organisms with their environment. 

a. Etiology 

b. Ecology 

c. Botany 

d. Biology  

Answer- Ecology 

Explanation-  Ecology is the scientific study of the interaction of organisms with each other and the environment.                     

Que- What is an Incinerator? 

a. Furnace used for burning solid waste  

b. Furnace used for treating liquid waste  

c. Both a & b  

d. None of the above 

Answer- Furnace used for burning solid waste  

Explanation-  Incineration is a waste treatment process that involves the combustion of organic substances contained in waste materials. Incineration and other high-temperature waste treatment systems are described as  " thermal treatment " . Incineration of waste materials converts the waste into ash, flue gas and heat.                     

Que- Air pollution can be of 

a. natural origin 

b. artificial or man made origin 

c. both a and b 

d. b only 

Answer- both a and b 

Explanation-  both a and b                     

Que- Nitrogen oxide and hydrocarbons released by automobiles interact to form   

a. CO 

b. PAN 

c. SO2 

d. Aerosol  

Answer- PAN 

Explanation-  Peroxyacyl Nitrates being a secondary pollutant is not emitted directly from the automobiles or power plants but is formed from the pollutants emitted from the automobiles and power plants through the chemical reaction.                     

Que- The Expansion of SPCA 

a. Society for the Protection of Common Animals  

b. Society for the Prevention of Cruelty to Animals  

c. Society for the Prohibition of Cruelty to Animals  

d. None 

Answer- Society for the Prevention of Cruelty to Animals  

Explanation-  SPCA = Society for Prevention of Cruelty to Animals.                     

Que- Deforestation generally decreases 

a. Global Warming 

b. Drought 

c. Soil erosion 

d. Rainfall 

Answer- Rainfall 

Explanation-  When forests are destroyed, the atmosphere, water bodies, and the water table are all affected. Trees absorb and retain water in their roots. A large part of the water that circulates in the ecosystem of rainforests remains inside the plants. Some of this moisture is transpired into the atmosphere. When this process is broken, the atmosphere and water bodies begin to dry out. The watershed potential is compromised and less water will run through the rivers. Smaller lakes and streams that take water from these larger water bodies dry up.                     

Que- What is Canopy? 

a. Uppermost level of the forest 

b. Ground level of the forest 

c. Soil in forest  

d. Climbers on trees 

Answer- Uppermost level of the forest 

Explanation-  The uppermost branches of the trees in a forest, forming a more or less continuous layer of foliage.                     

Que- The presence of solid, liquid or gaseous compounds, which may not be normally present, or in excess concentration in the atmosphere is called 

a. air pollution  

b. water pollution  

c. soil pollution  

d. radioactive pollution 

Answer- air pollution  

Explanation-  The presence in or introduction into the air of a substance which has harmful or poisonous effects is called air pollution.                     

Que- The deepest radiation inversion would be observed: 

a. At the equator any day of the year 

b. In polar regions in winter 

c. At the top of a high mountain in winter 

d. On a desert in winter 

Answer- In polar regions in winter 

Explanation-  In meteorology, an inversion, also known as a temperature inversion, is a deviation from the normal change of an atmospheric property with altitude. It almost always refers to an inversion of the thermal lapse rate. Normally, air temperature decreases with an increase in altitude. During an inversion, warmer air is held above cooler air; the normal temperature profile with altitude is inverted. An inversion traps air pollution, such as smog, close to the ground. An inversion can also suppress convection by acting as a  " cap " . If this cap is broken for any of several reasons, convection of any moisture present can then erupt into violent thunderstorms. Temperature inversion can notoriously result in freezing rain in cold climates                     

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