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CBSE Class 12 Biology 2018 – Paper Analysis & Review

The students of Class 12 appeared for their Biology paper today, March 27, under the ongoing Central Board of Secondary Examination (CBSE). We bring you CBSE Class 12 Biology 2018 – Paper Analysis & Review.

There were 4 sections A, B, C, D and E. (Total questions- 26, Maximum marks- 70)

Section A
Question numbered 1 to 5 (very short-answer type) were of 1 marks each.
Total Marks : 5

Section B
Question numbered 6 to 10 (short-answer type I) were of 2 marks each.
Total Marks : 10

Section C
Question numbered 11 to 22 (short-answer type II) were of 3 marks each.
Total Marks : 36

Section D
Question number 23 (Value based) was of 4 marks.
Total Marks : 4

Section E
Question numbered 24 to 26 (Long-answer type) were of 5 marks each.
Total Marks : 15

Marking Scheme & Chapter Distribution (Weightage) for CBSE Class 12 Biology 2018

Chapter Name Weightage in terms of marks (2017) Weightage in terms of marks (2018)
Reproduction in Organisms 3
Sexual Reproduction in Flowering Plants 10 5
Human Reproduction 5 11
Reproductive Health 4
Principles of Inheritance and Variation 4 5
Molecular Basis of Inheritance 12 11
Evolution 4 6
Human Health and Disease 8 4
Strategies for Enhancement in Food Production 4 3
Microbes in Human Welfare 5 11
Biotechnology: Principles and Processes 9 3
Biotechnology and its Applications 4 4
Organisms and Populations 8 5
Ecosystem 8 5
Biodiversity and Conservation 2 3
Environmental Issues 3 6

Note: The analysis includes marks of optional questions, hence total marks will vary.

Comparison with Last Year’s Paper

  • Last year, ‘Sexual Reproduction in Flowering Plants’ had more weightage than ‘Human Reproduction’ whereas this year ‘Human reproduction’ has more weightage than ‘Sexual Reproduction in Flowering Plants’.
  • The weightage of ‘Organisms and Populations’ was halved as compared to 2017.
  • Marks’ weightage wasn’t similar as compared to that of last year.

Overview of CBSE Class 12 Biology 2018 – Paper Analysis & Review

  • Overall most of the students attempt was between 60+ mark.
  • According to our analysis, 60+ out of 70 is easily scorable.
  • Overall, the level of the paper was medium.

What students thought

  • The difficulty level of the question paper was similar to that of the last year’s question paper.
  • Though students were expecting difficult questions from certain topics like Molecular Basis of Inheritance and Principles of Inheritance and Variation, CBSE gave them a surprise by setting direct questions.
  • The paper was not lengthy, hence managing time was not difficult during the exam.

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