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Questions
41 Which of the following series is true about energy flow in an ecosystem?
A Producers→Decomposers→Consumers
B Decomposers→Consumers→Producers
C Producers→Consumers→Decomposers
D Consumers→Producers→Decomposers

Answer: Option [C]
42 Which of the following three R’s are regarded as environment friendly?
A Reduce, Reuse, Recycle
B Read, Register, Recall
C Random, Reduce, Recall
D Reduce, Rebuild, Restrict

Answer: Option [A]
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43 An organism which can monitor air pollution is
A Fungi
B Algae
C Bacteria
D Lichen

Answer: Option [D]
44 Translocation of water is
A Apoplastic
B Symplastic
C Both (A) and (B)
D None of the above

Answer: Option [C]
45 Green blocks are referred to
A Pro-biotic curd
B Bio-bricks
C Green cover
D Green Ministry

Answer: Option [B]
46 One of the best solutions to get rid of non-biodegradable wastes is
A Burying
B Burning
C Dumping
D Recycling

Answer: Option [D]
47 What is ‘Biodiversity’?
A Many types of flora and fauna in one forest
B Many types of flora and fauna in many forests
C Many population of one species in one forest
D All the above are true

Answer: Option [A]
48 To conserve coral reefs, the Government of India declared one of the following as Marine Park:
A Gulf of Mannar
B Andaman Islands
C Gulf of Kutch
D Lakshadweep Islands

Answer: Option [C]
49 The environment includes
A Abiotic factors
B Biotic factors
C Oxygen and Nitrogen
D Abiotic and Biotic factors

Answer: Option [D]
50 Identify the correct statement with respect to Biogas
A Mixture of gases from volcanoes
B Gas produced by fermen-tation of biomass
C Gas produced from certain crude oil wells
D Gas produced by incomplete combustion of biomass

Answer: Option [B]

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