Tamil Nadu (English Medium) Plus 2 Biology Science Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in

Question-1
Contour farming is usually employed in

(A) hilly areas	(B) sandy areas
(C) sea beaches	(D) All of these

Question-2
The term 'Alpha diversity' refers to

(A) genetic diversity	(B) community and ecosystem diversity
(C) species diversity	(D) diversity among the plants

Question-3
The cause of decline in the population of reptiles and birds is

(A) DDT	(B) biofertilizer
(C) bioinsecticides	(D) sewage

Question-4
Chipko movement was launched for the protection of

(A) grasslands	(B) forests
(C) liverstock	(D) wet lands

Question-5
Which one is not the renewable energy of natural resources ?

(A) Tidal energy	(B) Wind energy
(C) Fossil energy	(D) Solar energy

Question-6
Which one of the following has maximum genetic diversity in India ?

(A) Teak	(B) Mango
(C) Wheat	(D) Tea

Question-7
The ozone layer is found in

(A) troposphere	(B) mesosphere
(C) stratosphere	(D) atmosphere

Question-8
In 2002 AD, according to research, the concentration of CFCs reached to

(A) 368 ppm	(B) 1750 ppb
(C) 261 ppt	(D) 326 ppb

Question-9
The animal, extincted from India is

(A) lion	(B) cheetah
(C) deer	(D) peacock

Question-10
The species diversity of plants on earth will be

(A) 2.4%	(B) 22%
(C) 8.1%	(D) 85%

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Plus 2 Biology Science

Tamil Nadu (English Medium)

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