AHSEC Class 12 Biology 2024 Question Paper [HS 2nd Year Biology Previous Year Question Paper]

HS 2nd Year Biology Question Paper 2024 English Medium ASSEB DIVISION -II

Are you searching for the AHSEC Class 12 Biology Question Paper 2024 English Medium? Look no further! This article provides a detailed analysis and HS 2nd Year Biology Question Paper 2024 English Medium 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 2024 Question Paper [HS 2nd Year Biology Previous Year Question Paper]

2024

BIOLOGY

(Theory)

Full Marks: 70

Pass Marks: 21

Time: Three hours

The figures in the margin indicate full marks for the questions.

PART-I (BOTANY)

MARKS - 35

PART-II (ZOOLOGY)

MARKS - 35

Part-I (Botany)

1. Name the bacterium used in pesticides. 1

2. Who first coined the term 'mutation'? 1

3. Give an example of adaptive radiation. 1

4. What is gene therapy? 1

5. Answer the following: 2x4=8

(a) Write the biotic component of an ecosystem.

(b) Name one homologous and one analogous organ of plant.

(c) Define fermentation. Name one microorganism used in industrial fermentation.

(d) Mention the different kinds of pollination.

6. Write short notes on: (any two) 2x2=4

(a) Embryo sac

(b) Antibiotic

(c) Ecological succession

7. Write the scientific name with the utility of the following plants: (any two) 2+2=4

(a) Neem

(b) Rauwolfia

(c) Cinchona

(d) Sal

8. How is genetically engineered insulin produced? 3

Or

Describe the various types of ecological pyramids. 3

9. Draw and describe the different parts of a complete flower. 1+2=3

Or

Explain the Hardy-Weinberg principle. 3

10. Write an account on biotechnological application in agriculture. 4

Or

Write briefly on modern synthetic theory of evolution. 4

11. Describe the carbon cycle in ecosystem with diagram. 5

Or

Describe the process of tissue culture. 5

Part-II

(Zoology)

1. Fill in the blanks: (any two) 1x2=2

(a) The acrosomal vesicle of mature sperm contains _________enzyme.

(b) ________was known as father of genetics.

(c) Transgenic cow milk contains ________protein.

(d) The disease transmitted through sexual intercourse is called ________.

2. Answer any two: 1x2=2

(a) What is ovulation?

(b) Name one contagious disease.

(c) What is human genome?

(d) Name the host plant of Muga silkworm.

3. Answer any four: 2x4=8

(a) Write the different stages of fertilization.

(b) What is meant by incomplete dominance?

(c) Write the name of the enzymes in DNA replication.

(d) Mention the various types of cancer.

(e) Name two biosphere reserves of North-East Region of India.

4. Write the differences between: (any two) 2x2=4

(a) Linkage and recombination

(b) Nucleotide and nucleoside

(c) Vaccination and immunization

(d) Addiction and dependence

5. Draw a labelled diagram of T.S. of testis. 3

Or

Draw a labeled diagram of transmission process in bacterial cell. 3

6. What is genetic diversity? Write its difference from ecological diversity. 1+2=3

Or

Define mutation. Write about the differences between deletion and duplication. 1+2=3

7. Write the diseases of silkworm 3

8. How did Griffith prove that DNA is the genetic material?5

Or

Describe the various population growth factors. 5

9. Describe the reproductive health problems and strategies. 5

Or

Describe the salient features of human genome. 5

-000-

2024

BIOLOGY

(Botany/ Zoology)

(Practical)

Full Marks: 15

Time: 1.5 hours

The figures in the margin indicate full marks for the questions.

1. Dissect and display the reproductive parts of the supplied specimen 'A'. Draw the labeled diagram of dissected parts and describe in scientific terms. 1+2+2=5

2. Study the population frequency of the plants found in the campus of your institution using quadrate method. Write requisitions for the experiment. Records your observations and find out results of the experiment. 1+2+1=4

Or

Study the mitosis in supplied sample 'B'. Write principle of the experiment. Record your observations and draw the stage of the division. 2+1+1=4

3. Identify the specimens 'C', 'D' and 'E' with comments. 1x3=3

4. Practical Record book. 3

(ZOOLOGY)

(Practical)

Full Marks:15

Time: 1.5 hours

The figures in the margin indicate full marks for the questions.

1. Determine the pH of supplied water sample 'A' to you. Write the names of two living organism observed under microscope. 1+0.5+0.5=2

2. Prepare a pedigree chart using standard symbol from the data (sample 'B') supplied to you. Write the genotype of each person. 3+1=4

3. Identify the specimen 'C' with at least one specific reasons. 1+1=2

4. Write two adaptive features of the specimen 'D'. 0.5+0.5=1

5. Identify the specimen 'E'. Write two symptoms of two diseases caused by this. 1+0.5+0.5=2

6. Practical Record Book. 4

-000-

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



Assam Board Class 12 Biology Previous Year Question Paper


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