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Bio-Diversity and its Conservation


13. 

Theory of natural selection was propounded by

Answer : B. Charles Darwin

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14. 

Generally biological activity is relatively little

Answer : A. below 0 C or above 50 C

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15. 

In 1.2 years half 64mg of radioactive isotope decays. The amount present after 6 years is

Answer : D. 2 mg

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16. 

The first bird is believed to have appeared on the surface of the earth

Answer : C. 150 million years ago

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17. 

Which one of the following animals stores water in the intestine?

Answer : B. Camel

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18. 

Terrestrial produces

Answer : D. Uric acid

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