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Class 12 Biology - PYQ 30 Important Questions

Board Exam Revision Pack | Theory + Diagrams + Short + Long

๐Ÿ”น A. Short Answer Questions
Q1. Define biodiversity.
Q2. What is gene therapy?
Q3. Define PCR.
Q4. What is plasmid?
Q5. Define infertility.
Q6. What is ecological succession?
Q7. Define biopiracy.
Q8. What is transplantation?
Q9. Define population density.
Q10. What is recombinant DNA?
๐Ÿ”น B. Long Answer Questions
Q11. Explain DNA fingerprinting.
Q12. Describe the structure of DNA.
Q13. Explain the process of transcription.
Q14. Explain translation in protein synthesis.
Q15. Explain biotechnology and its applications.
Q16. Explain the human reproductive system.
Q17. Describe Mendelโ€™s laws of inheritance.
Q18. Explain ecological pyramids.
Q19. Explain biodiversity conservation.
Q20. Explain evolution and natural selection.
๐Ÿ”น C. PYQ Type Questions
Q21. Draw and label structure of DNA.
Q22. Draw human female reproductive system.
Q23. Differentiate between DNA and RNA.
Q24. Explain the significance of PCR.
Q25. Explain the role of restriction enzymes.
๐Ÿ”น D. Application Based Questions
Q26. Why is biodiversity important for ecosystem stability?
Q27. How does biotechnology help in agriculture?
Q28. Why is genetic variation important?
Q29. Why should endangered species be conserved?
Q30. How does DNA act as genetic material?
๐Ÿ”น E. Important Diagrams

๐Ÿงฌ DNA Structure

      A=T
     /   \
    |     |
    |     |
     \   /
      Gโ‰กC
        

๐Ÿ‘ฉ Female Reproductive System

 Ovary -- Fallopian Tube -- Uterus
             |
          Cervix
             |
           Vagina
        

๐Ÿ”ฌ PCR Process

DNA
 โ†“
Denaturation
 โ†“
Annealing
 โ†“
Extension
 โ†“
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