Biology | Question Paper 2080-2023 of Class 12 | NEB | Technical Stream | Code-9101 - PDF Download
The Biology Question Paper 2080-2023 of Class 12 NEB Technical Stream Code-9101 - PDF Download is an essential resource for students preparing for the National Examination Board’s Technical Stream final exam. This question paper covers important topics in Class 12 Biology, including cell biology, genetics, ecology, and human anatomy, following the NEB syllabus. Students appearing for the Biology 2081 and further exam can use this paper to understand the question patterns, marking scheme, and level of difficulty. The Biology Question Paper 2080-2023 of Class 12 NEB (Technical Stream) is also helpful for practice and self-assessment to improve exam performance.
For those seeking previous year’s exam resources, the Biology Question Paper 2080-2023 of Class 12 NEB Technical Stream Code-9101 provides a reliable study aid. The PDF download allows students to review questions at their convenience, whether online or offline. This NEB Class 12 Biology past paper is particularly valuable for technical stream students aiming to excel in their NEB Board Exam 2080. By practicing with the Biology 2080-2023 question paper, learners can strengthen their problem-solving skills, enhance conceptual understanding, and prepare strategically for upcoming examinations.
So, check and Download Class 12 Biology 2080-2023 Question Paper in PDF format.
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Biology Question Paper 2080-2023 of Class 12 NEB Technical Stream Code-9101.
NATIONAL EXAMINATIONS BOARD [NEB]
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Candidates are required to give their answers in their own words as far as practicable. The figures in the margin indicate full marks.
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Attempt all the questions.
Group - 'A' 11x1=11
Rewrite the correct options of each questions in your answer sheet.
1. Which tissue is called a living mechanical tissue?
(A) Parenchyma
(B) Aerenchyma
(C) Collenchyma
(D) Chlorenchyma
2. What is the genetic material composed of in most organisms?
(A) Proteins
(B) Carbohydrates
(C) Lipids
(D) Nucleic acids
3. Which of the following tissue has the light and dark bands alternately arranged?
(A) Striped
(B) Unstriped
(C) Involuntary
(D) Unstraited
4. What is the main end product of photosynthesis?
(A) ATP
(B) Carbon dioxide
(C) Water
(D) Glucose
5. What is meant by heterozygous genotype?
(A) Having two different alleles for a gene
(B) Having no alleles for a gene
(C) Having a dominant allele and a recessive allele for a gene
(D) Having two identical alleles for a gene
6. Which of the following function is related to sertoli cells?
(A) Formation of ova
(B) Nutrition to sperms
(C) Movement of sperms
(D) Formation of sperms
7. Which of the following is the organ transplantation between two genetically identical individuals?
(A) Autograft
(B) Xenograft
(C) Isograft
(D) Allograft
8. How can the accurate age of a tree be determined?
(A) Counting the number of branches
(B) Measuring the diameter of stem
(C) Counting the number of annual rings in the tree trunk
(D) Measuring the height of the tree
9. Which of the following sequence is in correct order?
(A) Malleus, stapes, incus
(B) Incus, stapes, malleus
(C) Malleus, incus, stapes
(D) Incus, stapes, malleus
9. If a woman is not able to produce the baby. What technique is used to solve this problem?
(A) Amniocentesis
(B) In-vitro fertilization
(C) Vaccination
(D) In-vivo-fertilization
10. Why is it rare for a girl to be colourblind ?
(A) Her mother and maternal grand father were colourblind
(B) Her father and maternal grand father were colourblind
(C) Her mother is colourblind and father has normal vision
(D) Parents have normal vision but grand parents were colourblind
Group 'B' 8x5=40
12. What is the difference between hypertonic, hypotonic and isotonic solutions and how do they affect the movement of water across a selectively permeable membrane ? 3+2
13. What is incomplete dominance ? Provide an example of a trait that shows incomplete dominance and explain how it is inherited ? 1+4
14. What is plasmolysis ? Point out its significances. 1+4
15. Draw a labelled diagram of T.S. of dicot stem and compare it with that of monocot stem. 3+2
16. Digestive, respiratory and circulatory systems in human beings are interrelated. Applying your understanding how all these systems work together for normal physiology ? 5
Or
Identify the hormones released by adrenal cortex. In what ways these hormones are useful to the human body. 2+3
17. Compare and contrast areolar and adipose tissues. 2.5+2.5
18. What is diffusion ? Compare it with that of osmosis. 1+4
19. How can biotechnology be applied in medicine and agriculture and analyze the potential benefits and drawbacks of using biotechnology in these fields.
Group 'C' 8x3=24
20. What is amniocentesis ? Why is it done ? Explain the procedure of amniocentesis. 1+1+6
21. Due to metabolic activities, toxic substances are formed in the body. Identify these substances. Draw a labelled diagram and explain the excretory organs of human beings. 2+2+4
22. Explain the process of semi-conservative replication of DNA with necessary diagrams. How does replication contribute to the accurate transmission of genetic information from one generation to the next generation. 6+2
Or
Discuss the different types of gene mutation and their effects on the genetic make up of an organism. Evaluate the positive and negative impacts of gene mutations and chromosomal mutations on the organisms. 4+4
Biology Question Paper 2080-2023 of Class 12 NEB Technical Stream Code-9101.
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