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Question-1 An ecosystem which can be easily damaged but can recover after some time if damaging effect stops will be having

(A) High stability and high resilience	(B)Low stability and low resilience
(C)High stability and low resilience	(D)Low stability and high resilience

Question-2 Decomposition of domestic wastes under natural processes is called

(A) Industrial pollution	(B)Thermal pollution
(C)Biodegradable pollution	(D)Nonbiodegradable pollution

Question-3 Ozone day is observed on

(A) September 16	(B)April 25
(C)January 15	(D)December 16

Question-4 The most appropriate measure of a country's economic growth is its

(A) Gross Domestic Product	(B)Net Domestic Product
(C)Net National Product	(D)Per Capita Real Income

Question-5 Scientific study of soil is called :

(A) Pedology	(B)Demology
(C)Topology	(D)Entonology

Question-6 Which of the following occupies a key position in overall economic growth?

(A) Banking	(B)Developmnet
(C)Agriculture	(D)Industry

Question-7 Ozone layer of upper atmosphere is being destroyed by

(A) Chlorofluorocarbon	(B)Photochemical oxidants
(C)Sulphur dioxide	(D)Smog

Question-8 Which one of the following is not a functional unit of an ecosystem?

(A) Productivity	(B)Stratification
(C)Energy flow	(D)Decomposition

Question-9 The term 'Ecosystem' was first coined by

(A) A.G. Tausley	(B)Keynes
(C)Samuelson	(D)Alfred Marshall

Question-10 Which one of the following is NOT a gaseous bio geo chemical cycle in ecosystem?

(A) Nitrogen cycle	(B)Carbon cycle
(C)Sulphur cycle	(D)Phosphorus cycle

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Std 9

ICSE/ISC

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