Biology – Important Question Bank for Gujarat (12th Std) HSC Board Exam 2020

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After the tremendous success of our last year Important Questions Bank for Gujarat HSC (12th Std) Board Exam 2016, 2017,  2018 and 2019 we have also created a list of Most Important Questions Bank for Gujarat (12th Std) HSC Board Exam 2020 which are likely to appear in HSC Board Exams this year.

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  1. Draw the diagram showing blood circulation path m heart and describe blood circulation through heart.
  2. What is Endoscopy? Describe the methodology and usefulness of endoscopy.
  3. Explain the production of Hurnan insulin with labelled diagram.
  4. Explain structure of Immunoglobulin and Antibody mediated Immunity.
  5. Describe in detail Hormones of adrenal cortex.
  6. Differentiate between C3-path and C4-path by six points each.
  7. Write in detail Negative feed-back regulation. Explain mode of action of Peptide hormones.
  8. In which region of chloroplast the photo chemical phases take place? Explain photolysis of water.
  9. Explain Transmission of impulse at a synapse with labelled diagram.
  10. Explain the effect of changing concentration of atmospheric CO2 on respiration and photosynthesis.
  11. Explain the approaches of Water conservation and Water Management.
  12. Draw labelled diagram of Front view of female reproductive system and write about Uterus only.
  13. Describe the pioneer stage of Hydrosere succession and Xerosere succession.
  14. State the disorders resulting due to deficiency of Riboflavin and Thiamine and write any four symptoms of each.
  15. Give name of any two non-biodegradable wastes and explain how to control the Industrial Pollution.
  16. Draw T.S. of Anther and explain the structure of Pollen grain and Embryo sac
  17. Explain Human Embryo development after Morula stage.
  18. Draw a chart showing role of Rubisco in photo-respiration and explain the chemical changes taking place in Kranz-anatomy. Why productivity of C4 Path is higher?
  19. Write concentration of micronutrient and macronutrient per 1 gram dry mass of plant and describe Hydroponic method.
  20. Explain the professional Induced-lung diseases and protective measures against them.
  21. Explain Transmission of impulse at a synapse with labelled diagram.
  22. Draw a chart of Glycolysis and explain Dephosphorylation and also write the equation.
  23. What is the meaning of Harmful relationships? Describe exploitation and predation.
  24. Explain the theory of Cohesion-force.
  25. Describe the structure and function of Adrenal Cortex.
  26. Describe – Gene mutation and state note worthy points regarding gene mutation.
  27. Why it is said that Bio-pesticides and Bio-fertilizers are better in comparison to chemical pesticides and chemical fertilizers respectively?
  28. Explain in detail Wear and Tear theory.
  29. Draw a labelled diagram of the internal structure of Kidney and explain any two phases of urine formation.
  30. Differentiate between Callus culture and Suspension culture with four points each.
  31. Write the range of Regeneration in any four animals and describe type of Regeneration.
  32. Explain the structure of megasporangiurn with labelled diagram.
  33. On the basis of penetration of light, describe the various zones of lake.
  34. Explain anaerobic respiration in plant cell and animal cell.
  35. Draw a chart showing fixation of Nitrogen and explain the role of leg hemoglobin in it. Also write three components required to complete this process.
  36. Draw labelled diagram of Front view of male reproductive system and write about Epididymis only.

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