AHSEC Class 12 Biology 2014 Question Paper [HS 2nd Year Biology Previous Year Question Paper]

Get, Assam Board Class 12 Biology Previous Year Question Paper 2014

Are you searching for the AHSEC Class 12 Biology Question Paper 2014? Look no further! This article provides a detailed analysis and HS 2nd Year Biology Question Paper 2014 under the Assam Higher Secondary Education Council (AHSEC) Now Assam State School Education Board (ASSEB). Assam Board Class 12 Biology Previous Year Question Paper For students preparing for board exams, previous year question papers are a crucial resource for understanding question patterns, marks distribution, and important topics.

AHSEC Class 12 Biology 2014 Question Paper [HS 2nd Year Biology Previous Year Question Paper]

2014

BIOLOGY (Theory)
Full Marks: 70
Time: Three Hours

PART-I: BOTANY
Marks: 35

  1. What is protovirus?

  2. Give an example of a plant where the fruit is not produced from the ovary.

  3. What is meant by biofortification?

  4. The enzyme used to break the cellular wall of bacteria is?

  5. Do eukaryotic cells have restriction endonuclease? Justify your answer.

  6. Define somatic hybridization. Give an example of a plant produced from somatic hybridization.

  7. What is mycorrhiza? How does it help as a biofertilizer?

  8. "Microbes can be used as a source of energy". Justify.

  9. Suggest any two techniques which can help in early detection of bacterial/viral infections before symptoms appear in the body.

  10. Why do internode segments of sugarcane fail to propagate vegetatively even when in contact with damp soil?

  11. What do you mean by parthenocarpy? Give an example of a parthenocarpic fruit.

  12. What are transgenic plants? Give examples.

  13. What is meant by homeostasis?

  14. Discuss briefly the experiment of Miller on the chemical origin of life.

  15. "Life has originated in sea water." Justify the statement with an example.

  16. Define Single Cell Protein (SCP). Name some common microbes as SCP producers.

  17. State the principle of 'Gel Electrophoresis.' Mention two applications of this technology in Biotechnology.

  18. Give the scientific names and families of three popular and important timber-yielding plants of Assam.

  19. Culture medium can be referred to as a highly enriched laboratory soil. Justify the statement.

  20. Explain the procedure of Recombinant DNA technology.

  21. Write the principle of the PCR technique. Mention the role of PCR in molecular diagnosis.

  22. With the help of labelled sketches, describe the process of microsporogenesis in an angiospermic plant. State the function of tapetum.

  23. What is plant breeding? Mention the role of plant breeding in modern agriculture.

PART-II: ZOOLOGY
Marks: 35
Page No. 5-7

  1. Fill in the blanks:
    (a) Sericogenic insects belong to the order ________.
    (b) Cessation of menstrual cycle in females is called ________.
    (c) Genetic disorder, due to the presence of an additional X-chromosome is ________.

  2. Answer any two:
    (a) How many polypeptides are in human insulin?
    (b) Name the amino acid which fails to convert to tyrosine in phenylketonuria.
    (c) Give an example of an invasive weed species that threatens our native species.

  3. Write answers to any four of the following:
    (a) How does implantation of the human embryo occur in the mother’s uterus?
    (b) What do you understand by reproductive health?
    (c) How is sex determined in man?
    (d) Why is hn RNA required to undergo splicing?
    (e) What is the causative organism of amoebiasis? State the symptoms of the disease.
    (f) What are the different silkworms cultured commercially in Assam?

  4. State the difference between (any two):
    (a) Genotype and phenotype
    (b) Benign tumor and malignant tumor
    (c) Spermatogenesis and oogenesis
    (d) Predation and parasitism

  5. Draw a neat labelled diagram of the double helical structure of a DNA molecule.
    Or
    Draw a neat labelled diagram of the cross-section of a seminiferous tubule.

  6. How did Hershey and Chase prove that DNA is the genetic material?
    Or
    What is DNA fingerprinting? Mention its applications.

  7. Why should we conserve biodiversity?
    Or
    What is auto-immunity? Name an autoimmune disease.

  8. What is the genetic code? State the principal features of the genetic code.
    Or
    What is an ecological pyramid? Explain different types of pyramids with necessary diagrams.

  9. Discuss the immune system of the body.
    Or
    Write the names of the different species causing malaria in man. Describe the life cycle of the malarial parasite in brief.

-00000-

Also Explore: AHSEC HS Class 12 Biology Chapter Wise Notes For Upcoming Final Examination



Assam Board Class 12 Biology Previous Year Question Paper


Post a Comment

Study Materials

Cookie Consent
Dear Students, We serve cookies on this site to analyze traffic, remember your preferences, and optimize your experience.
Oops!
It seems there is something wrong with your internet connection. Please connect to the internet and start browsing again.
AdBlock Detected!
We have detected that you are using adblocking plugin in your browser.
The revenue we earn by the advertisements is used to manage this website, we request you to whitelist our website in your adblocking plugin.