WBCHSE Environmental Studies Question Paper 2020
The state of West Bengal is one of the first in India where the modern system of education was established by British Missionaries. Since then, it has evolved into the fine education system and is now monitored by state run autonomous body.
The West Bengal Council of Higher Secondary Education (WBCHSE) came into existence in 1975. It is an autonomous examining authority. It is responsible for conducting examinations for standard XII b yfor both government and private schools affiliated to this board. It is responsible for improvement and promotion of education in the state.
The WBCHSE has made a sustained effort towards a quality uniform evaluation system all over the state of West Bengal. More than 6800 schools and over 16 lakhs students are being monitored by the Council. The task has been more challenging in context of the very competitive global environment and a diverse range of subjects.
The H.S. education is a significant part of the overall education system. West Bengal has the distinction of being the pioneer in the modern education system by virtue of the influence of the great literary and social path finders.
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Environmental Studies 2020 |
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VISION SUCCESS
West Bengal Council of Higher Secondary Education
Environmental Studies
QUESTION PAPER-2020
PART A (MARKS: 40)
1. Answer the following questions (Alternatives are to be noted):
Write a short note on 'Biosphere Reserves' of India. What is "Tissue Bank'?
Or. Write a short note on 'Wildlife Trade'. What is 'Gene Resource Centre' ?
(i) Discuss the major steps that are needed for environmental protection in India.
Or, State any four resolutions adopted in the Earth Summit (1992).
(ii) Explain, with the help of a diagram, the relationship between 'ecological development and 'socio-economic development'
(iv) Discuss the role of governmental and non-governmental organizations in achievins sustainable development in India.
(v)Explain the role of agro-chemicals' on environment.
Or, Explain the necessity of 'sustainable agriculture' in India.
PART B (MARKS: 40)
1. Select the correct answer from the alternatives: 1x24=24
(i) Approximately what percentage of nutrients remain stored above the ground in temperate-zone forests?
(a) 3% (b) 20%
(c) 50% (d) None of these
(ii) In which country was the 'Convention on Biodiversity' (C.B.D.) held?
(a) Iran. (b) South Africa
(c) India. (d) Brazil
(iii) in which year was the 'Atomic Energy Act promulgated in India ?
(a) 1962. (b) 2002
c) 1929. (d) None of these
(iv) Bt crop is a type of
(a) hybrid crop . (b) natural crop
c) genetically modified crop
(d) none of these
(v) Who first coined the word biodiversity
(a) E.O. Wilson. (b) E. Haeckel
(c) A. Tansley. (d) R. Carson
(vi) How many people of the world face death out of pesticide poisoning every year?
(a) 20,000. (b) 40,000
c) 60,000. (d) None of these
(vii) Where is the primitive plant 'Citrus Indica' found in India?
(a) Tura district (Meghalaya)
(b) Purulia district (West Bengal)
(c) Ranchi district (Jharkhand)
(d) All are correct
(Viii) Approximately how many species of bacteria are found in india ?
(a) 451. (b) 258
(c) 850. (d) None of these
(ix) Approximately what percentage of the world's total faunal wealth is found in india?
(a) 12.4
(b) 20.4
(c) 6.4
(d) None of these
(x) What percentage of Goa's total land area is covered by mines?
(a) 30. (b) 14
(c) 5. (d) 21
(xi) How many plant species are found in North-East india only?
(a) 1000. (b) 1500
(c) 2500. (d) 200
(xii) What was the main theme of 'Brundtland Commission' Report?
(a) Sustainable development
(b) Continuous expansion of agriculture
(c) Continuous expansion of industries
(d) Continuous expansion of education
(xiii) The main cause of increase in soil acidity is-
(a) application of excess chemical fertilizer
(b) application of excess biofertilizer
(c) excessive land erosion
(d) all are correct
(xiv) As per 1974 survey, approximately what percentage of cropland in northern Nigeria was prevalent with 'Mixed Farming'?
(a) Over 80%
(b) Less than 40%
(c) 20%
(d) None of these
(xv) What is the present total number of threatened plant species in India?
(a) 1336. (b) 39
(c) 72. (d) 17
(xvi) In which year was the 'Indian Forests Act' promulgated?
(a) 1956 . (b) 1970
(c) 1927. (d) 1932
(xvi) In which year was the first 'Conference on Human Environment' heid at Stockholm?
(a) 1972. (b) 1992
(c) 2005. (d) 1987
(xviii) The smallest unit in classification of organisms is-
(a) Class . (b) Family
(c) Species. (d) Genus
(xix) How much area of global land is getting lost due to soil erosion every year?
(a) 180 lakh hectares
(b) 30 lakh hectares
(c) 40 lakh hectares
(d) 5 lakh hectares
Xx) What is the difference between the day lenghts of 'tropical' and 'temperate' countries in summer period?
(a) 4 hours
(b) 2 hours
(c) 1 hour
(d) 3 hours
(xxi) What is the permissible range of pH in drinking water as per 'IS: 10500'?
(a) 6.5-8.5. (b) 5.5-7.5
(c} 7.5-10.5. (d) 5.5-6.5
(xxxii) what is the maximum permissibie limit of noise at night in residential area?
(a) 75 dB (A) (b) 55 d8 (A)
c) 50 dB (A) (d) 45 dB (A)
(xxiii) How many species of flowering piants are found in Andaman-Nicobar Islands?
(a) 1500. (b) 1700
(c} 2000. ( d) None of these
(xxiv) What was the main reason for destruction of Mayan civilization ?
(a) Meteoritic shower. (b) Famine
c) Climate change. (d) All are correct
2. Answer the following questions in very brief (Alternatives are to be noted) 1x16=16
(I) What is the ful form of 'C.1.T.E.S.?
(ii) What is 'bio-accumulation'?
(iii) What is 'Genetic Biodiversity'?
Or, What is 'Worid Heritage Site'?
(iv) What is the full form of 'R.S.P.M.?
(v) What do you mean by 'Sustainable Economy' ?
(vi) What is a 'Megabiodiversity Nation' ?
Or, Where are coral reefs found in India?
vii) Give an example of toxic metal found in soil.
(viii) What do you mean by 'Fossil-Fuel Age'?
(ix) What type of pollution arises due to excessive irrigation on land ?
(x)What is the scientific name of 'Siris' plant ?
Or, What do you mean by 'rare' animai species?
(xi) What is the full form of 'D.D.T.'?
Or, State the importance of Trichoderma.
(xii) What is the importance of 'blue-green algae' in environment?
(xiii) What is 'Humus'?
Or, Give an example of leguminous plant,.
(xiv) State the role of earthworms in soil.
Or, What is 'Azospirillum' Ans.
.
(xv) What is 'Rhizobium ?
Or, Give one example of biological pest control.
(xvi) What is 'Glomus' ?
Or, What is 'Agroforestry'?
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