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AHSEC Class 12 Important question of Biology 2021 | 100% success

AHSEC Class 12 Important question of Biology 2021

If you are looking for the important question of AHSEC class 12 Biology  2021. You are here at the right place.

Assam Higher Secondary Education Council (AHSEC) examination will start soon. As of today, only a few days left to prepare for AHSEC class 12th final examination. The Assam Higher Secondary Education Council (AHSEC) has adopted the NCERT curriculum for class 12 students. The syllabus for AHSEC class 12 is very vast. It is almost impossible to cover all the units in the curriculum especially at the last moment only a few students can do it. so, we make a selected question for AHSEC class 12 biology on the basis of the previous 10 years question paper. We do not guarantee you that all the selected question will come in your final examination, but as per the last 10 yrs question paper, we make a set of selected question. Definitely, this will helps you to prepare for the final examination at the last moments and it will give an idea of what type of question is important for the final examination.

Here is some important question for AHSEC class 12 biology, 2021 are given below-

Very short question ( 1 marks)

  1. what is a transgenic animal?
  2. State the symptoms of typhoid
  3. How implantation of the human embryo occurs in the mother uterus?
  4. What is GMO?
  5. Why is apple called a false fruit?
  6. Which enzyme transcribes hnRNA?
  7. What is a hidden hunger?
  8. How sex is determined in a man?
  9. What is polyploidy?
  10. Name the microbes used for the production of Acetic acid and Lactic acid
  11. Write the equation of the ‘Species-Area’ relationship in a logarithmic scale
  12. Write the scientific name of the water hyacinth.
  13. How many polypeptides are in human insulin?

 Question ( 2/3/5 marks)

  1. What is SCP? Mention its significance
  2. What is triple fusion? Where does it occur?
  3. Explain the principle of Hardy-Weinberg.
  4. What is the full form of PCR? How the amplification of DNA is done by this process?
  5. Express the genotype of blood group AB
  6. what is the substance present in the birth control pill?
  7. What is the full form of ELISA? Name 2 diseases for the detection of which ELISA technique is used.
  8. Describe the formation of the placenta
  9. Describe the function of the placenta
  10. What is DNA fingerprinting? Mention its application.
  11. Why should we conserve biodiversity?
  12. Explain the structure of an antibody
  13. Draw the structure of seminiferous tubule
  14. Discuss various means of prevention & control of drug addiction
  15. Describe the life cycle of the malaria parasite
  16. A child has blood group ‘O’. If a father has ‘A’ & a mother has ‘B’ blood group. Write the genotype of parents & possible of other offspring.
  17. Explain incomplete dominance with an example
  18. What is the ecological pyramid? Explain the different types of pyramids with necessary diagram.
  19. Define antigen and antibody.
  20. What is a food chain? Describe two principal types of the food chain.
  21. Explain the significance of mutation in evolution
  22. Do eukaryotic cells have restriction endonuclease? Justify
  23. Explain the experiment of Miller on the chemical origin of life
  24. What is the principle of biotechnology? explain
  25. What is recombinant DNA technology? Describe the process
  26. Why the father never pass the gene for haemophilia to his son?
  27. Describe the application of microbes in sewage treatment.

Difference between

  1. B-lymphocyte and T-lymphocyte
  2. Linkage and crossing over
  3. Sex chromosome and autosome
  4. Complete linkage and incomplete linkage
  5. Active immunity and passive immunity
  6. mRNA and tRNA
  7. Genotype and phenotype
  8. Spermatogenesis and oogenesis

Short notes

  1. Sickle cell anaemia
  2. haemophilia
  3. Thalassemia
  4. Down’s syndrome
  5. Turner’s syndrome
  6. Biogas

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