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Main Concepts of Life Science

13. 

Viruses are inert

A. Outside the host cell B. inside host cell C. both of these D. None of these

Answer : A. Outside the host cell

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14. 

W.M. Stanley got Nobel Prize for

A. DNA B. Virus C. RNA D. Bacteria

Answer : B. Virus

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15. 

Gnetum is a

A. Lianas B. Shrub C. Tree D. All the above

Answer : D. All the above

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16. 

In photosynthesis, the light reaction is known as hill reaction and the dark reaction is known as

A. Dark reaction B. Blackman reaction C. Darkman reaction D. None of these

Answer : C. Blackman reaction

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17. 

Oxygen in the universe is replinished by

A. chemosynthesis B. bacterial photosynthesis C. photolysis of water D. higher plant photosynthesis

Answer : D. higher plant photosynthesis

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18. 

The gas evolved by leaves during photosynthesis is

A. hydrogen B. oxygen C. nitrogen D. chlorine

Answer : B. oxygen

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