6. The early stage of human embryo distinctly possesses

1. 1. Gill

   
   
   

   2. Gill slits

   
   
   

   3. External ear

   
   
   

   4. Eyehrous

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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7. Gene pool is

1. 1. Genotype of individuals of a polulation

   
   
   

   2. Different genes of all dividuals of a species

   
   
   

   3. Pool of artificially synthesised genes

   
   
   

   4. Gene of a genome

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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8. Wings of pigeon, bat and mosquito exhibit the phenomen on called

1. 1. Convergent evolution

   
   
   

   2. Divergent evolution

   
   
   

   3. Atavism

   
   
   

   4. All of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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9. Geographic and reproductive isolation bring about

1. 1. Extinction

   
   
   

   2. Over production

   
   
   

   3. Speiciation

   
   
   

   4. Competition

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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10. Homologous organs are

1. 1. Dissimilar origin and dissimilar structure

   
   
   

   2. Dissimilar origin but similar function

   
   
   

   3. Similar origin with similar or dissimilar function

   
   
   

   4. Similar origin with dissimilar function

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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