MCQ Questions on Environment & Biodiversity GK Questions and Answers


GK Questions with answers on Environmental Science, which are made while keeping in mind the relevance of the subject and its importance for an exam point of view. These MCQs helps the aspirant in the preparation of examinations like UPSC (IAS, IPS, IES, IFS, CDS, and NDA), State-PSC, SSC, Railways etc. Students can easily get free general knowledge questions on this platform for online exam practice to obtain good marks in the competitive exams.

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Q.1.The method of soil conservation in which rocks are piled up to slow down the flow of water which prevents gullies and further soil loss is called

(a) Mulching
(b) Contour barriers
(c) Rockdam
(d) Terrace Farming

(c) Rockdam


Q.2. The World’s largest bio-fuel plant has been established with a production capacity of 100 million liters per year, is located in

(a) China
(b) India
(c) Brazil
(d) USA

(c) Brazil


Q.3. Rio Summit is associated with

(a) Convention on Biological Diversity
(b) Green house gases
(c) Ozone depletion
(d) Wet lands

(a) Convention on Biological Diversity


Q.4. The method of soil conservation in the coastal and dry regions where rows of trees are planted to check the wind movement to protect soil cover is called

(a) Mulching
(b) Contour barriers
(c) Rock dam
(d) Shelter belts

(d) Shelter belts


Q.5. The radiant energy received by the Earth from the sun is

(a) Radiation
(b) Insolation
(c) Reflection
(d) Refraction

(b) Insolation


Q.6. Which has the maximum rate of deforestation?

(a) Tropical Zone
(b) Desert Zone
(c) Temperate Zone
(d) Northern Forest

(a) Tropical Zone


Q.7.Which of the following aquatic plant is effective in preventing the water-pollution caused by industrial waste?

(a) Water Hyacinth
(b) Elephant Grass
(c) Parthenium
(d) (2) and (3)

(a) Water Hyacinth


Q.8. What is the biggest source of pollution in the world?

(a) Sewage and Garbage
(b) Automobile Laxity
(c) Herbicide and Insecticide
(d) Industrial Tributaries

(a) Sewage and Garbage


Q.9. The method of soil conservation in which different crops are grown in alternate rows and are sown at different times to protect the soil from rain wash is called?

(a) Mulching
(b) Intercropping
(c) Rockdam
(d) Terrace farming

(b) Intercropping


Q.10. Which of the following environment supports the growth of Mangrove Swamp?

(a) Tidal flat
(b) Monsoon
(c) Equatorial
(d) Mixed

(a) Tidal flat


Q.11. The first protocol to ban the emissions of choloro fluorocarbons in the atmosphere was made in

(a) Montreal
(b) Osaka
(c) Geneva
(d) Florida

(a) Montreal


Q.12. The cause of reduction of forest coverage is

(a) Agriculture
(b) Manufacturing Industry
(c) Rising Population
(d) Toursim and Pilgrimage

(c) Rising Population


Q.13. What is the benefit of rain water storage?

(a) Recharging ground water level
(b) Respite from floods
(c) Reduce the scarcity of water
(d) Protection from soilerosion

(a) Recharging ground water level


Q.14. The world’s highest per capita carbon dioxide emitter is: –

(a) Qatar
(b) United States
(c) China
(d) India

(a) Qatar


Q.15. What is the following statements is incorrect.

(a) Photochemical haze always contains ozone
(b) The toxic effect of carbon monoxide is more attractive to hemoglobin than oxygen
(c) Lead is the most dangerous metal pollutant of automobile exhaust
(d) None of these

(d) None of these


Q.16. What species are found abundantly in ecotone, what is called?

(a) Edge species
(b) Keystone species
(c) Endemic species
(d) Foster species

(a) Edge species


Q.17. Which of the following disease reduces the age of laborers working in coal mine and that disease is called Black Lung disease?

(a) Clomgolanosis
(b) progressive massive fibrosis
(c) mesothelioma
(d) None of these

(a) Clomgolanosis


Q.18. Where is Dachigam National Park?

(a) Jammu Kashmir
(b) Himachal Pradesh
(c) Uttarakhand
(d) Punjab

(a) Jammu Kashmir


Q.19. From which source is the list of countries emitting carbon dioxide based on carbon dioxide emissions?

(a) Burning of fossil fuels
(b) Cement Industry
(c) Both of the above
(d) None of these

(c) Both of the above


Q.20. When was the World Wildlife Fund founded?

(a) 1969
(b) 1992
(c) 1961
(d) 1965

(c) 1961


Q.21. Which of the following is an important Green house Gas?

(a) Carbon Dioxide
(b) Chlorofluorocarbon
(c) Carbon Monoxide
(d) Freon

(a) Carbon Dioxide


Q.22. Which of the following is a renewable source of energy?

(a) Atomic power
(b) Hydro electric power
(c) Thermal power
(d) Natural gas

(b) Hydro electric power


Q.23. Due to growing demand of which of the following product, tropical forest are being damaged the most

(a) Pork
(b) Sugar
(c) Meat of Goat
(d) Beef

(d) Beef


Q.24. What is the meaning of the term ‘abyssopelagic’?

(a) Organisms living at water depths greater than 2000m
(b) Organisms living at water depths greater than 4000m
(c) Organisms living at water depths greater than 3000m
(d) Organisms living at water depths greater than 1000m

(b) Organisms living at water depths greater than 4000m


Q.25. The production of light by living beings is known as

(a) Bio-luminescence
(b) Bio-lighting
(c) Bio-fluorescence
(d) Bio-diversity

(a) Bio-luminescence


Q.26. Which country is popularly knowns as ‘land of the windmills’?

(a) The Netherlands
(b) Poland
(c) Norway
(d) Japan

(a) The Netherlands


Q.27. Who was the first man to travel in space?

(a) Edwin Aldrin
(b) Neil Armstrong
(c) Yuri Gagarin
(d) Gregory Mendel

(c) Yuri Gagarin


Q.28. Which instrument is used to measure wind velocity?

(a) Barometer
(b) Anemometer
(c) Hygrometer
(d) Radiometer

(b) Anemometer


Q.29. What is the instrument used to detect earthquakes?

(a) Radiometer
(b) Barometer
(c) Seismograph
(d) Anemometer

(c) Seismograph


Q.30. What is the unit in which radio activity is measured?

(a) Newton
(b) Roentgen
(c) Decibel
(d) Gagarin

(b) Roentgen


Q.31. The region of the atmosphere above 400 km and higher is known as

(a) Exosphere
(b) Mesosphere
(c) Thermosphere
(d) Atmosphere

(a) Exosphere


Q.32. The major diet of pandas is

(a) Acacia leave
(b) Bamboo
(c) Grass
(d) Tree

(b) Bamboo


Q.33. Which of the following is not an endangered animal?

(a) Siberian tiger
(b) Loggerhead turtle
(c) The Maned Wolf
(d) Indian tiger

(c) The Maned Wolf


Q.34. The non-point pollution of river water involves discharge of pollutants through

(a) urban sewage drains
(b) industrial effluents
(c) agricultural fields
(d) both (a) and (b)

(c) agricultural fields


Q.35. With reference to forest ecosystems, consider the following statements :

  1. The number pyramid is neither inverted nor upward.
  2. The biomass pyramid is inverted.
    Which of the statements given above is/are correct ?

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2

(a) 1 only


Q.36. In ecological terms, what does the term “standing crop” signify ?

(a) total weight of whole organic matter
(b) total weight of heterotrops
(c) total area covered by crops
(d) None of the above

(a) total weight of whole organic matter


Q.37. Southern Birdwing is a/an:

(a) butterfly endemic to Peninsular India
(b) invasive fish species responsible for damage to other fish population in Krishna River
(c) species of peafowl recently declared vermin in Goa
(d) newly declared state bird of Delhi

(a) butterfly endemic to Peninsular India


Q.38. Where is the secretariat of the Conference on Biological Diversity?

(a) London
(b) Italy
(c) Montreal
(d) Toronto

(c) Montreal


Q.39. Which one of the following ecosystems covers the largest area of the earth’s surface?

(a) Desert Ecosystem
(b) Grassland Ecosystem
(c) Mountain Ecosystem
(d) Marine Ecosystem

(d) Marine Ecosystem


Q.40. The Ozone hole over Antarctica was discovered in

(a) 1975
(b) 1985
(c) 1978
(d) 1987

(b) 1985


Q.41. Which of the following has maximum bio-diversity?

(a) Desert
(b) Polar Region
(c) River
(c) Tropical Region

(c) Tropical Region


Q.42. The Biosphere is a region of earth which supports life. It includes- 1.Hydrosphere, 2.Lithosphere, 3.Stratosphere, 4.Troposphere

(a) 1 and 3
(b) 1, 2 and 4
(c) 1 and 4
(d) 2, 3 and 4

(b) 1, 2 and 4


Q.43. Of the solar energy coming into the Biosphere, what percentage of it is actually used in the photosynthesis?

(a) Less than 1
(b) Between 1% and 15%
(c) Between 15% and 2%
(d) More than 2%

(d) More than 2%


Q.44. EL-Nino is

(a) Warm Ocean Current
(c) Sea Storm
(b) Tropical Disturbance
(d) Another name of Typhoon

(a) Warm Ocean Current


Q.45. Who propounded the term ecology?

(a) Charles Darwin
(b) Robert Whitaker
(c) Arthur Tansley
(d) Ernest Hackle

(d) Ernest Hackle


Q.46. Which of the following is not a greenhouse gas?

(a) methane
(b) nitrous oxide
(c) Sulfur Hexa Fluoride
(d) carbon monoxide

(d) carbon monoxide


Q.47. Which of the following is not an area of coral reef?

(a) Gulf of Mannar
(b) Gulf of Cambay
(c) Lakshadweep
(d) Andaman and Nicobar Islands

(b) Gulf of Cambay


Q.48. Biological indicator of pollution of sulfur dioxide is: –

(a) moss
(b) smoke
(c) Braophyta
(d) None of these

(a) moss


Q.49. An aquatic plant was introduced to the US to remove pollution in Indian aquatic bodies as a troublesome weed. what is its name?

(a) hawthorn
(b) Egiolps
(c) hyacinth
(d) Pistia

(b) Egiolps


Q.50. Which award is given to those who show indomitable courage in the field of wildlife conservation?

(a) Indira Gandhi Environment Award
(b) Medini Award Scheme
(c) Amrita Devi Bishnoi Award
(d) Pitambar Pant National Award

(c) Amrita Devi Bishnoi Award


Q.51. Which is the longest mountain range in the world?

(a) Karakoram
(b) Rockies
(c) Himalayas
(d) Andes

(d) Andes


Q.52. Which country ratified the Kyoto Protocol in late 2004 and thus caused it to become an international law?

(a) US
(b) Russia
(c) Japan
(d) France

(b) Russia


Q.53. The natural process of the atmosphere heating through the trapping of re-radiated infrared radiation is known as

(a) The green house effect
(b) Thermal inversion
(c) Solar heating
(d) Global warming

(a) The green house effect


Q.54. Temperate forests are likely to have which of the following species of trees?

(a) Pine
(b) Spruce
(c) Redwood
(d) All the above

(d) All the above


Q.55. In what type of bioregion is desertification is most likely to occur?

(a) Tropical Forests
(b) Temperate Forests
(c) Coniferous Forests
(d) Grasslands

(d) Grasslands


Q.56. Around the North Pole of Earth, tiny electrically charged particles high in the atmosphere react with rays from the sun to create beautiful sheets of light. Theser are called

(a) Aurora Borealis
(b) Aurora Australis
(c) Aurora Solaris
(d) None of the above

(a) Aurora Borealis


Q.57. PVC is a very toxic form of plastic. What is the full form of PVC?

(a) Plastic vinyl compounds
(b) Polymer vinyl chloride
(c) Polyvinyl chloride
(d) Polyvinyl camphor

(c) Polyvinyl chloride


Q.58. Which Bollywood actor was the ambassador of the Earth Hour 2009 in India?

(a) Shahrukh Khan
(b) Naseruddin Shah
(c) Anupam Kher
(d) Aamir Khan

(d) Aamir Khan


Q.59. Which of the following materials can be recovered from the recycling of soft drink cans?

(a) Paper
(b) Plastic
(c) Metal
(d) Glass

(c) Metal


Q.60. Coined the word ‘ecology’?

(a) Ernst Haeckel
(b) Charles Darwin
(c) Gregory Mendel
(d) Albert Einstein

(a) Ernst Haeckel


Q.61. What are saprophytes?

(a) Living beings that feed on the sap from tree bark
(b) Living beings that feed on dead or decayed organic matter
(c) Living beings that feed on other living beings
(d) Living beings that feed on dead or decayed inorganic matter

(b) Living beings that feed on dead or decayed organic matter


Q.62. Who are ethologists?

(a) Scientists who study about ethos
(b) Scientists who study about the behaviour of wild animals
(c) Scientists who study about the behaviour of animals in a particular eco system.
(d) Scientists who study about the

(b) Scientists who study about the behaviour of wild animals


Q.63. What are terricolous animals?

(a) Animals that live in a particular territory
(b) Animals that live on high mountains
(c) Animals that live in the soil
(d) Animals that live in a particular region

(c) Animals that live in the soil


Q.64. What are arboreal animals?

(a) Animals living in trees
(b) Animals living in water
(c) Animals living in marshy lands
(d) Animals living in water and land

(a) Animals living in trees


Q.65. Who is known as the father of evolution?

(a) Gregory Mendel
(b) Charles Darwin
(c) Albert Einstein
(d) Ernst Haeckel

(b) Charles Darwin


Q.66. Which of the following is an amphibian?

(a) Salamanders
(b) Lizards
(c) Fish
(d) Snake

(a) Salamanders


Q.67. What is the safe level of noise intensity for humans?

(a) Up to 90 decibels
(b) up to 70 decibels
(c) up to 80 decibels
(d) Up to 60 decibels

(c) up to 80 decibels


Q.68. The region of air close to the earth and extending up to 10km high is called

(a) Atmosphere
(b) Stratosphere
(c) Troposphere
(d) Barometer

(c) Troposphere


Q.69. What are planktons?

(a) Plants living in water
(b) Very small plants and animals living in water
(c) Very small animals living on land
(d) Plants living on land

(b) Very small plants and animals living in water


Q.70. Which among the following is a correct definition of an Ecotone?

(a) a transition between two types of ecosystems particularly plant communities
(b) a transition between two types of ecosystems particularly soil structure & chemical Composition
(c) a transition between two types of mountain ranges
(d) a transition between two types of ecosystems such as water and land

(a) a transition between two types of ecosystems particularly plant communities


Q.71. In the UNFCCC convention at which among the following places, the decision to set up a “Green Climate Fund” was taken?

(a) Copenhagen
(b) Cancun
(c) Bali
(d) Paris

(a) Copenhagen


Q.72. Which is not a part of National Action Plan on Climate Change?

(a) National Water Mission
(b) National Mission on Pollution Control
(c) National Mission for Sustainable Agriculture
(d) National Mission on Sustainable Habitat

(b) National Mission on Pollution Control


Q.73. The Hydroponics is most closely related to which among the following?

(a) Grafting of Plants
(b) Water conservation
(c) Study of Vegetable
(d) Soilless culture of Plants

(d) Soilless culture of Plants


Q.74. The Western Ghats Ecology Expert Panel (WGEEP) is headed by:

(a) R.K.Pachauri
(b) Vandana Shiva
(c) Madhav Gadgil
(d) Pradip Krishen

(c) Madhav Gadgil


Q.75. The Earth summit was organised by

(a) UNESCO
(b) UNCED
(c) WHO
(d) UNICEF

(b) UNCED


Q.76. World Environmental day is celebrated on ________ every year.

(a) 01-05-2001
(b) 05-06-2005
(c) 01-10-2024
(d) 01-12-2025

(b) 05-06-2005


Q.77. Environment includes

(a) Abiotic component
(b) Biotic component
(c) Oxygen and Nitrogen
(d) Abiotic and Biotic component

(d) Abiotic and Biotic component


Q.78. The largest ecosystem of earth is

(a) Biome
(b) Hydrosphere
(c) Lithosphere
(d) Biosphere

(d) Biosphere


Q.79. For which of the following reason, it is necessary to secure a large area for forest?

(a) Absorption of carbon dioxide
(b) Conservation of wild
(c) More rain
(d) Ecological balance

(d) Ecological balance


Q.80. Among the following climatic factors, which one has the least effect upon a terrestrial ecosystem?

(a) Temperature variation
(b) Wind
(c) Conditions of sunlight
(d) Availability of water

(b) Wind


Q.81. Soil is eroded heavily due to deforestation, it affects the flowing of surface water badly. Which of the following is badly affected by these causes

(a) Human Resource
(b) Ecological System
(c) Climate
(d) Local Plants

(b) Ecological System


Q.82. What is the ecological system integrating all living beings and their relationships?

(a) Total Wild Life
(b) Biosphere
(c) Lithosphere
(d) Hydrosphere

(b) Biosphere


Q.83. Global warming is expected to result in

(a) Increase in sea level
(b) Change in crop pattern
(c) Change in coastal line
(d) All of these

(d) All of these


Q.84. What is the cause of ‘Green house effect’?

(a) Nitrogen
(b) Carbon Dioxide
(c) Carbon Monoxide
(d) Nitrogen Dioxide

(b) Carbon Dioxide


Q.85. Electron gun is the main part?

(a) Cathode Ray Isoloscope
(b) Transistor tester
(c) Single Generator
(d) All of the above

(a) Cathode Ray Isoloscope


Q.86. Refrigerators have a relay?

(a) Magnetic type
(b) by simple switch
(c) Non-magnetic
(d) All of the above

(a) Magnetic type


Q.87. This islands are famed for their vast number of endemic species and were studied by Charles Darwin during the voyage of the Beagle.

(a) Raja Ampat, Indonesia
(b) Great Barrier Reef, Australia
(c) Andaman Islands, India
(d) Galapagos islands

(d) Galapagos islands


Q.88. The Encantadas, or Enchanted Isles” is a novella by American author Herman Melville which consists of ten philosophical “Sketches” on the islands. Which one of the following is referred to as Enchanded Isles?

(a) Andaman Islands, India
(b) Galapagos islands
(c) Coronado Island
(d) Greenland

(b) Galapagos islands


Q.89. The microbes that are active at low temperatures

(a) thermophiles
(b) Mesophiles
(c) Psychrophiles
(d) neutrophiles

(c) Psychrophiles


Q.90. Sick Building Syndrome (SBS) describes which phenomenon?

(a) Indoor air pollution
(b) Indoor water pollution
(c) Indoor noise pollution
(d) All the above

(a) Indoor air pollution


Q.91. The outermost layer of Earth’s atmosphere or the upper limit of the atmosphere is

(a) Thermosphere
(b) Exosphere
(c) Ionosphere
(d) Mesosphere

(b) Exosphere


Q.92. To be classified as a hurricane in the Saffir Simpson hurricane wind scale (SSHWS), a tropical cyclone must have maximum sustained winds of at least

(a) 74 mph
(b) 100 mph
(c) 50 mph
(d) 80 mph

(a) 74 mph


Q.93. The injection of fertilizers, soil amendments, and other water-soluble products into an irrigation system is termed as

(a) Fertilization
(b) Fertigation
(c) Drip irrigation
(d) Foliar feeding

(b) Fertigation


Q.94. What does UNEP stand for?

(a) United Nations Educational Plan
(b) United Nations Environmental Protection
(c) United Nations Environmental Programme
(d) United Nations Environmental Policy

(c) United Nations Environmental Programme


Q.95. The head quarters of UNEP is at

(a) New York
(b) Geneva
(c) Sockholm
(d) Nairobi

(d) Nairobi


Q.96. Name the intergovernmental body under the auspices of the United Nations that shared the 2007 Nobel Peace Prize with Al Gore, former U.S. Vice President

(a) WTO
(b) UNEP
(c) UNESCO
(d) IPCC

(d) IPCC


Q.97. Who was the Chairman of IPCC in 2007 when it was awarded Nobel Peace Prize?

(a) Hoesung Lee
(b) RK Pachauri
(c) Bert Bolin
(d) Robert Watson

(b) RK Pachauri


Q.98. Which camel species has two humps on its back?

(a) Arabian camel
(b) Australian camel
(c) Bactrian camel
(d) dromedary camels

(c) Bactrian camel


Q.99. By 2040, the world s population is expected to rise to approximately

(a) 7 billion
(b) 9 billion
(c) 12 billion
(d) 20 billion

(b) 9 billion


Q.100. Name India’s first national park

(a) Manas National Park
(b) Gir Forest National Park
(c) Bandhavgarh National Park
(d) Hailey National Park

(d) Hailey National Park


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