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 · 2017
Class 12 Biology 2017 Board Exam
77 questions from the 2017 Class 12 exam, combined from all 3 question paper sets (Set 1–3) with duplicates removed.
77questions
3exam sets
13chapters covered
1 / 2 / 3 / 4 / 5mark values
Questions from the 2017 exam first 10 of 77 — free
State two postulates of Oparin and Haldane with reference to origin of life.
[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: 57/3]
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]
Name the type of cross that would help to find the genotype of a pea plant bearing violet flowers.
[Max Marks: 1 | Set: 57/3]
State two postulates of Oparin and Haldane with reference to origin of life.
[Max Marks: 1 | Set: 57/2]
What are Cry genes ? In which organism are they present ?
[Max Marks: 1 | Set: 57/1]
Name the type of cross that would help to find the genotype of a pea plant bearing violet flowers.
[Max Marks: 1 | Set: 57/2]
A pollen grain in angiosperm at the time of dehiscence from an anther could be 2-celled or 3-celled. Explain. How are the cells placed within the pollen grain when shed at a 2-celled stage ?
[Max Marks: 2 | Set: 57/1]
Chapters covered in the 2017 exam
Sexual Reproduction in Flowering Plants
9 questions in 2017
Human Reproduction
3 questions in 2017
Reproductive Health
1 question in 2017
Principles of Inheritance and Variation
8 questions in 2017
Molecular Basis of Inheritance
10 questions in 2017
Evolution
6 questions in 2017
Human Health and Diseases
9 questions in 2017
Microbes in Human Welfare
6 questions in 2017
Biotechnology – Principles and Processes
5 questions in 2017
Biotechnology and its Applications
5 questions in 2017
Organisms and Populations
6 questions in 2017
Ecosystem
6 questions in 2017
Biodiversity and its Conservation
3 questions in 2017
About the 2017 Class 12 Biology paper
CBSE conducted the 2017 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 77 unique questions actually asked that year. The 2017 questions drew from 13 chapters of the syllabus.