Environmental Education

ISC Board Question Paper 2009

(Science Group)

Class - XII

General Instruction:

(i). Section – A are compulsory.

(ii). Section – B are answer any five questions.

SECTION – A

Q1.                                              (20 marks)

(i). What is ‘Captive breeding’?      1

(ii). Define a food chain.        1

(iii). Name a Biofertilizer that is essential for the healthy growth of a crop.    1

(iv). Name the NGO that is working in Andhra Pradesh to promote self sustenance in the region.       1

(v). Name a National Park in India aimed at protection of wild life.    1

(vi). Give an example of ‘Symbiosis’ in animals.      1                                 

(vii). What is an ‘Ecomark’ scheme?      1

(viii). What are ‘Threatened Species’?                      1

(ix). Mention any one legislation in India that is in force for managing the environment.     1

(x). State one application of Biodiversity in the field of medicine.      1

(xi). Define ‘Sustainable development’.                     2

(xii). State any two economic value of biodiversity.                  2

(xiii). Mention of the name of any two natural pest predators.          2

(xiv). State any two adverse effect of using chemical fertilizers.          2

(xv). Explain in brief the concept of a ‘Seed bank’                    2

SECTION – B                       (50 marks)

Q2. (i). What is ‘Biodiversity’? Discuss any three reasons for conserving biodiversity ?    5

      (ii). ‘Loss of biodiversity disturbs the ecological balance on the planet.’ List any five implications of the loss of biodiversity.            5

Q3. (i). Explain the role of wildlife sanctuaries in conservation of biodiversity.        5

     (ii).What is a ‘buffer zone’? Explain its role in mitigating the people – wildlife conflict.    5

Q4. (i). Discuss the various social aspects of environmental management.     5

      (ii). Explain in brief the concept of sustainable consumption with suitable examples.     5

Q5. (i). What are the different aspect to be consider in providing a support base for sustainable development? Explain any two in detail.         5

      (ii). Explain the role of skilled manpower in promoting a sustainable development highlighting the various fields where it is required.      5

Q6. (i). Explain the role of soil micro-organisms in maintaining the health of the soil.      5

      (ii). State one reason adopting immediate measures for increasing soil fertility. Explain in detail any two method by which soil fertility can be improved.         5

Q7. (i). Explain the various threads associated with the use of modern methods of pest control in agriculture.       5

      (ii). What is farmyard manure? Mention any three uses of farmyard manure.       5

Q8. (i). Explain the role of alternate technology in environmental management.       5

     (ii). Highlight any two problems associated with movement of agriculture goods form the producers to the consumers. Suggest any three methods for solving those problems.     5

Q9. (i). What is mixed farming ? Mention any three advantages of mixed farming.      5

      (ii).  Explain the benefits of applying Integrated Post Management Practices an agricultural crops.    5

Q10. (i). Environment should be viewed as a capital rather than as a recourse.      5

        (ii).Discuss the need for judicious use of chemical fertilizers.       5