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Environmental Issues: Evaluation - Important Questions and choose the correct answer - Zoology | Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail |

Chapter: 12th Zoology : Environmental Issues

Environmental Issues: Evaluation

Zoology : Environmental Issues - Important Questions and choose the correct answer - Zoology



1. Right to Clean Water is a fundamental right, under the Indian Constitution

a) Article 12

b) Article 21

c) Article 31

d) Article 41


2. With which of the following, the Agenda 21’ of Rio Summit, 1992 is related to?

a) Sustainable development

b) Combating the consequences of population

c) Mitigation norms of Green House Gases (GHGs) emission.

d) Technology transfer mechanism to developing countries for ‘clean-energy’ production.


3. Which among the following awards instituted by the Government of India for individuals or communities from rural areas that have shown extraordinary courage and dedication in protecting Wildlife?

a) Indira Gandhi Paryavaran Puraskar

b) Medini Puruskar Yojana

c) Amrita Devi Bishnoi Award

d) Pitambar Pant National Award


4. The ‘thickness’ of Stratospheric Ozone layer is measured in/on:

a) Sieverts units

b) Dobson units

c) Melson units

d)Beaufort Scale


5. Which among the following is the most abundant Green-House-Gas (GHG) in the earth’s atmosphere?

a) Carbon dioxide

b) Water Vapour

c) Sulphur Dioxide

d) Tropospheric Ozone


6. As per 2017 statistics, the highest per capita emitter of Carbon dioxide in the world is

a) USA

b) China

c) Qatar

d) Saudi Arabia


7. The use of microorganism metabolism to remove pollutants such as oil spills in the water bodies is known as

a) Biomagnification

b) Bioremediation

c) Biomethanation

d) Bioreduction


8. The Ozone Day is observed every year on September 16 as on this day in 1987 the ___________was signed for launching efforts to arrest the depletion of the fragile ozone layer in the stratosphere that prevents the harmful ultra-violet rays of the sun from reaching the earth. Fill the correct word in blank.

a) Montreal Protocol

b) Geneva Protocol

c) Kyoto Protocol

d)Nagoya Protocol


9. Which among the following always decreases in a Food chain across tropic levels?

a) Number

b)Accumulated chemicals

c) Energy

d) Force


10. In the E-waste generated by the Mobile Phones, which among the following metal is most abundant?

a) Copper

b) Silver

c) Palladium

d) Gold


11. The Hydrochlorofluorocarbons (HCFCs) are the compounds which have the following molecules:

a) Hydrogen

b) Carbon

c) Chlorine



12. SMOG is derived from :

a) Smoke

b) Fog

c) Both A and B

d) Only A


13. Excess of fluoride in drinking water causes:

a) Lung disease

b) Intestinal infection

c) Fluorosis

d) None of the above


14. Expand (i) CFC (ii) AQI (iii) PAN


15. What is SMOG and how it is harmful for us?


16. List all the wastes that you generate, at home, school or during your trips to other places. Could you very easily reduce the generation of these wastes? Which would be difficult or rather impossible to reduce?


17. Discuss the causes and effects of global warming. What measures need to be taken to control global warming?


18. What would Earth be like without the greenhouse effect?


19. Write notes on the following:

a. Eutrophication

b. Algal Bloom


20. What effect can fertilizer runoff have on an aquatic ecosystem?


21. How can we control eutrophication?


22. Why does ozone hole form over Antarctica?


23. Mention the causes of enhanced use of ultraviolet radiation.


24. Discuss the role of women in protection and conservation of forests.


25. Discuss the role of an individual to reduce environmental pollution.


26. How does recycling help reduce pollution?


27. What is the primary purpose of the Kyoto Protocol?


28. In what way Peyang conserves the forest?


29. Discuss briefly the following :

a. Catalytic converter

b. Greenhouse gases

c. Ecosan


30. What are some solutions to toxic dumping in our oceans?


31. Describe how deforestation might contribute to global warming.


32. How does forest conservation help to reduce air pollution?


Extra One mark Questions and Answers


1. DB is a standard abbreviation used for the quantitative expression of

a) The density of bacteria in a medium

b) A particular pollutant

c) The dominant bacillus in a culture

d) A certain pesticide


2. Which one of the following expanded forms of the following acronyms is correct?

a)UNEP : United Nations Environmental Policy

b)EPA : Environmental Pollution Agency

c)IUCN : International Union for Conservation of Nature and Natural Resources

d)IPCC : International Penal for climate Change


3. In an area where DDT had been used extensively the population of birds declined significantly because

a) Birds stopped laying eggs

b) Earthworms in the area got eradicated.

c) Cobras were feeding exclusively on birds.

d) Many of the birds eggs, laid, did not hatch.


4. Which one of the following is a wrong statement?

a) Most of the forests have been lost in tropical areas.

b) Ozone in upper part of atmosphere is harmful to animals.

c) Greenhouse effect is natural phenomenon

d) Eutrophication is a natural phenomenon in freshwater bodies.


5. Measuring Biochemical Oxygen Demand (BOD) is a method used for

a) Estimating the amount of organic matter in sewage water.

b) Working out the efficiency of oil driven automobile engines.

c) Measuring the activity of saccharomyces cerevisiae in producing curd on a commercial scales

d) Working out the efficiency of RBCs about their capacity to carry oxygen


6. Kyoto Protocol was endorsed at

a) CoP-3

b) CoP-5

c) CoP-6

d) CoP-4


7. A scrubber in the exhaust of a chemical industrial plant removes

a) Gases like sulphur dioxide.

b) Particulate matter of the size 5 micrometer or above.

c) Gases like ozone and methane

d) Particulate matter of the size 2.5 micrometer or less


8. Rachel Carson’s famous book ‘Silent Spring’ is related to

a) Pesticide pollution

b) Noise Pollution

c) Population explosion

d) Ecosystem management


9. Which of the following is not one of the primary health risks associated with greater UV radiation through the atmosphere due to depletion of stratospheric ozone?

a) Increased skin cancer

b) Reduced immune system

c) Damage to eyes

d) Increased liver cancer


10. Increase in the concentration of the toxicant at successive trophic levels is known as

a) Biodeterioration

b) Biotransformation

c) Biogeochemical cycling

d) Biomagnifications


11. A river with an inflow of domestic sewage rich in organic waste may result in:

a) Drying of the river very soon due to algal bloom

b) Increased population of aquatic food web organisms

c) An increased production of fish due to biodegradable nutrients

d) Death of fish due to lack of oxygen


12. A lake which is rich in organic waste may result in

a)  Drying of the lake due to algal bloom

b) Increased population of fish due to lots of nutrients

c) Mortality of fish due to lack of oxygen

d) Increases population of aquatic organisms due to minerals


13. The highest DDT concentration in aquatic food chain shall occur in

a) Seagull

b) Crab

c) Cell

d) Phytoplankton

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