Question

1.Biosphere is composed of :-
(a). Hydrosphere ( )
(b). Lithosphere( )
( c ). Atmosphere ( )
(d). All of the above ( )


2. Upto what height atmosphere located in the polar latitudes.
(a). 10 kms( )
(b). 20 kms( )
( c). 15 kms( )
(d). 24 kms ( )


3. The earth summit was organised by.
(a). UNESCO ( )
(b). UNCED ( )
( c). WHO ( )
(d). UNICEF ( )


4. The largest ecosystem of the earth is.
(a).biome ( )
(b).hydrosphere( )
( c). lithosphere( )
(d). Biosphere( )


5. The air is dry in.

(a). stratosphere( )
(b).thermosphere( )
( c).throposphere( )
(d).lonesphere( )


6. The atmosphere pressure decrease with.
(a).length( )
(b).width( )
( c).height( )
(d).all of them( )


7. Which of the following is an autotroph ?
(a).lion( )
(b).insect( )
( c).tree( )
(d). mushroom( )


8. Acid rain is caused by oxides of.
(a).carbon( )
(b).nitrogen( )
( c).sulphur only( )
(d).sulphur and nitrogen( )


9.which of the following is biodegradable ?
(a).aluminium can( )
(b).polythene bag( )
( c).cow dung( )
(d). DDT( )


10. Which of the following is an abiotic component of an ecosystem.
(a).humus( )
(b).bacteria( )
( c).plants( )
(d). fungi( )




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Answer 1

1.All of the above.

2.upto 10km

3.UNESCO

4.biosphere

5.stratosphere

6.height

7.tree

8.sulpher and nitrogen

9.cowdung

10.humus

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Answer 2

1) all of the above. 3) UNCED 4) Biosphere. 5) stratosphere