Name the type of cross that would help to find the genotype of a pea plant bearing violet flowers.
[Max Marks: 1 | Set: 57/1]
Class 12 · Biology · CBSE Board · 2018
Class 12 Biology 2018 Board Exam
131 questions from the 2018 Class 12 exam, combined from all 3 question paper sets (Set 1–3) with duplicates removed.
131questions
3exam sets
13chapters covered
1 / 2 / 3 / 4 / 5mark values
Questions from the 2018 exam first 10 of 131 — free
Write the dual purpose served by Deoxyribonucleoside triphosphates in polymerisation.
[Max Marks: 1 | Set: 57/1]
How do cytokine barriers provide innate immunity in humans ?
[Max Marks: 1 | Set: 57/3]
Mention the chemical change that proinsulin undergoes, to be able to act as mature insulin.
[Max Marks: 1 | Set: 57/2]
Write the dual purpose served by Deoxyribonucleoside triphosphates in polymerisation.
[Max Marks: 1 | Set: 57/3]
Name two diseases whose spread can be controlled by the eradication of Aedes mosquitoes.
[Max Marks: 1 | Set: 57/1]
Bt-toxins are released as inactive crystals in the bacterial body. What happens to it in the cotton boll worm body that it kills the boll worm ?
[Max Marks: 1 | Set: 57/3]
State two postulates of Oparin and Haldane with reference to origin of life.
[Max Marks: 1 | Set: 57/1]
Write the names of the following :
Name the specific type of gene that is incorporated in a cotton plant to protect the plant against cotton boll worm infestation.
[Max Marks: 1 | Set: 57/2]
Chapters covered in the 2018 exam
Sexual Reproduction in Flowering Plants
12 questions in 2018
Human Reproduction
11 questions in 2018
Reproductive Health
1 question in 2018
Principles of Inheritance and Variation
12 questions in 2018
Molecular Basis of Inheritance
17 questions in 2018
Evolution
15 questions in 2018
Human Health and Diseases
14 questions in 2018
Microbes in Human Welfare
12 questions in 2018
Biotechnology – Principles and Processes
11 questions in 2018
Biotechnology and its Applications
8 questions in 2018
Organisms and Populations
6 questions in 2018
Ecosystem
6 questions in 2018
Biodiversity and its Conservation
6 questions in 2018
About the 2018 Class 12 Biology paper
CBSE conducted the 2018 Class 12 Biology board exam in 3 question paper sets — students in different regions received different sets of the same exam. This page combines every set and removes repeated questions, giving you all 131 unique questions actually asked that year. The 2018 questions drew from 13 chapters of the syllabus.