21. Chose the correct sequence during formation of chemicals on early earth

1. 1. Ammonia, water, nucleic acid and protein

   
   
   

   2. Ammonia, protein, Carbohydrates and nucleic acid

   
   
   

   3. Ammonia, nucleic acid, protein and carbohydrate

   
   
   

   4. Protein, carbohydrate, water and nucleic acid

   
   
   

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   NA

   Correct Option: A

   NA

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22. Fossilization can occur where

1. 1. Animals are buried by natural process

   
   
   

   2. Animals are destroyed by scavengers

   
   
   

   3. Animals are eaten by predators

   
   
   

   4. Animals are destroyed by environmental condition

   
   
   

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   NA

   Correct Option: A

   NA

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23. Evolutionary development of a species can be best studied by

1. 1. DNA analysis

   
   
   

   2. Finding age by carbon dating

   
   
   

   3. Studying fossils of this speices

   
   
   

   4. All of above

   
   
   

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   NA

   Correct Option: C

   NA

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24. The concept of survival of the fittest as advanced by

1. 1. Charles Lyell

   
   
   

   2. Charles Darwin

   
   
   

   3. Herbert Spencer

   
   
   

   4. Alfred Russel Wallace

   
   
   

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   NA

   Correct Option: C

   NA

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25. From the evolutionary point of view, which one among the following is the most primitive animal ?

1. 1. Dolphin

   
   
   

   2. Otter

   
   
   

   3. Turtle

   
   
   

   4. Walrus

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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