Biology 12th class Question Bank

                                            Sheet 1

1. What do you mean by spermetogenesis ? explain the whole process of Spermetogenesis .
   
2. Describe oogenesis .
   
3. Explain the process of megasporogenesis ?               
   
4. Write about the structure of pollen .
   
5. What is sporopollenin ?
   
6. What do you mean by bio fortification ?
   
7.  WIDAL test is used for which disease , explain ?
   
8. What do you mean by drugs ? Explain any two type of drugs .
   
9. Write the definition of pollution ?
   
10. What is SCP ?
    
11. Write difference between inbreeding and out breeding ?
    
12. What is Asexual type of Reproduction ?
    
13. Explain food Chain ?
    
14. What is  the difference between convergent and divergent evolution ?
    
15. Explain secondary treatment of sewage purification ?