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TNPSC - TRB - FREE ONLINE TEST 31 | ZOOLOGY | ENVIRONMENTAL SCIENCE

1.The field of collecting, compiling and presenting information about population is called .........

A) demography
B) cardiography
C) geography
D) biography

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ANSWER : A) demography
2.The number of births in a year per thousand persons is.........

A) Birthrate
B) Zero Population Growth Rate
C) Total fertility rate
D) Mortality

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ANSWER : A) Birthrate
3.The number of births by which people are just replacing themselves is.......

A) Total fertility rate
B) Birthrate
C) Zero Population Growth Rate
D) Mortality

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ANSWER : C) Zero Population Growth Rate
4.The number of children born to an average woman in a population during her entire reproductive is.

A) Mortality
B) Zero Population Growth Rate
C) Birthrate
D) Total fertility rate

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ANSWER : D) Total fertility rate
5.The number of deaths per thousand persons in any given year is.....

A) Zero Population Growth Rate
B) Birthrate
C) Mortality
D) Total fertility rate

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ANSWER : C) Mortality
6.The average temperature of earth is about.......

A) 59 degree F (15 degree C)
B) 69 degree F (25 degree C)
C) 79 degree F (18 degree C)
D) 49 degree F (19 degree C)

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ANSWER : A) 59 degree F (15 degree C)
7.Of the total amount of water, how much is available as fresh water?

A) 10 %
B) 3%
C) 15%
50%

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ANSWER : B) 3%
8.Which of the following countries depend on desalination process for getting fresh water?

A) Dubai
B) Oman
C) Bahrain
D) All the above

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ANSWER : D) All the above
9.Plants are able to breakdown cyanide and reduce it to a non-toxic form.

A) Gibberella fusarium
B) GEMS
C) Pseudomonas
D) Xenobiotics

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ANSWER : A) Gibberella fusarium
10.......are capable of degrading variety of toxic compounds and also degrade oil.

A) Gibberella fusarium
B) GEMS
C) Pseudomonas
D) Xenobiotics

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ANSWER : C) Pseudomonas

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