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Question Paper 2017 delhi Set-1

Class 12 biology Last year paper 2017 delhi Set-1, this question paper has 26 questions and this question paper have four Section A,B,C,D,E Section A contains 5 questions and section B contains 5 questions,section C contains 12 questions, section D contains 1 vbq, Section E contains 3 questions Explain enzyme-replacement therapy to treat adenosine deaminase deficiency. Mention two disadvantages of this procedure.

Question Paper 2017 delhi Set-2

Class 12 biology Last year paper 2017 delhi Set-1, this question paper has 26 questions and this question paper have four Section A,B,C,D,E Section A contains 5 questions and section B contains 5 questions,section C contains 12 questions, section D contains 1 vbq, Section E contains 3 questions During a medical investigation, an infant was found to possess an extra chromosome-21. Describe the symptoms the child is likely to develop later in the life.  

Question Paper 2017 delhi Set-3

Class 12 biology Last year paper 2017 delhi Set-3, this question paper has 26 questions and this question paper have four Section A,B,C,D,E Section A contains 5 questions and section B contains 5 questions,section C contains 12 questions, section D contains 1 vbq, Section E contains 3 questions Explain enzyme-replacement therapy to treat adenosine deaminase deficiency. Mention two disadvantages of this procedure.

 

Question Paper 2016 Set-1 foreign

Class 12 biology Last year paper 2016 Set-1 foreign, this question paper has 26 questions and this question paper have four Section A,B,C,D,E Section A contains 5 questions and section B contains 5 questions,section C contains 12 questions, section D contains 1 vbq, Section E contains 3 questions Explain the events upto fertilization that occur in a flower after the pollen grain has landed on its compatible stigma.

Question Paper 2016 Set-2 foreign

Class 12 biology Last year paper 2016 Set-2 foreign, this question paper has 26 questions and this question paper have four Section A,B,C,D,E Section A contains 5 questions and section B contains 5 questions,section C contains 12 questions, section D contains 1 vbq, Section E contains 3 questions What does nature’s carrying capacity for a species indicate?

CBSE Question Paper 2016 Delhi Set-2

CBSE Question Paper 2016 Delhi Set-2, this question paper has 26 questions and this question paper have four Section A,B,C,D,E Section A contains 5 questions and section B contains 5 questions,section C contains 12 questions, section D contains 1 vbq, Section E contains 3 questions Explain enzyme-replacement therapy to treat adenosine deaminase deficiency. Mention two disadvantages of this procedure.

 

 

Question Paper 2016 Set-3 foreign

Class 12 biology Last year paper 2016 Set-3 foreign, this question paper has 26 questions and this question paper have four Section A,B,C,D,E Section A contains 5 questions and section B contains 5 questions,section C contains 12 questions, section D contains 1 vbq, Section E contains 3 questions Suggest four advanced ex-situ methods to conserve threatened biodiversity.

Question Paper 2016 Delhi (Set 3)

Question Paper 2016 Delhi (Set 3)this question paper has 26 questions and this question paper have four Section A,B,C,D,E Section A contains 5 questions and section B contains 5 questions,section C contains 12 questions, section D contains 1 vbq, Section E contains 3 questions Suggest the breeding method most suitable for animals that are below average in milk productivity.

Question Paper 2016 Set-1 outside delhi

Class 12 biology Last year paper 2016 Set-1 outside delhi, this question paper has 26 questions and this question paper have four Section A,B,C,D,E Section A contains 5 questions and section B contains 5 questions,section C contains 12 questions, section D contains 1 vbq, Section E contains 3 questions Explain enzyme-replacement therapy to treat adenosine deaminase deficiency. Mention two disadvantages of this procedure.

Question Paper 2016 Set-2 outside delhi

Class 12 biology Last year paper 2016 Set-1 outside delhi, this question paper has 26 questions and this question paper have four Section A,B,C,D,E Section A contains 5 questions and section B contains 5 questions,section C contains 12 questions, section D contains 1 vbq, Section E contains 3 questions Give a genetic explanation for the following cross. When a tall pea plant with round seeds was crossed with a dwarf pea plant with wrinkled seeds then all the individual of F1-population were tall with round seeds. However selfing among F1-population led to a 9:3:3:1 phenotypic ratio.

Question Paper 2016 Set-3 outside delhi

Class 12 biology Last year paper 2016 Set-3 outside delhi, this question paper has 26 questions and this question paper have four Section A,B,C,D,E Section A contains 5 questions and section B contains 5 questions,section C contains 12 questions, section D contains 1 vbq, Section E contains 3 questions (a) Name the selectable markers in the cloning vector pBR322? Mention the role they play.(b) Why is the coding sequence of an enzyme (β-galactosidase) a preferred selectable marker in comparison to the ones named above?

Question Paper 2015 Set-1 compartment outside Delhi

Class 12 biology Last year paper 2015 Set-1 compartment outside Delhi, this question paper has 26 questions and this question paper have four Section A,B,C,D,E Section A contains 5 questions and section B contains 5 questions,section C contains 12 questions, section D contains 1 vbq, Section E contains 3 questions Peer pressure plays a negative role in triggering smoking habits in adolescents. As a school captain list any two activities you would like to organize with the help of senior students of your school and any other two activities you would like your school authorities to organize for the students to tackle this problem. Explain how these activities will help in doing so.

 

CBSE Question Paper 2015 Delhi Set-1

CBSE Question Paper 2015 Delhi Set-1, this question paper has 26 questions and this question paper have four Section A,B,C,D,E Section A contains 5 questions and section B contains 5 questions,section C contains 12 questions, section D contains 1 vbq, Section E contains 3 questions Excessive nutrients in a fresh water body cause fish mortality. Give two reasons.

Question Paper 2015 Set-2 compartment outside Delhi

Class 12 biology Last year paper 2015 Set-1 compartment outside Delhi, this question paper has 26 questions and this question paper have four Section A,B,C,D,E Section A contains 5 questions and section B contains 5 questions,section C contains 12 questions, section D contains 1 vbq, Section E contains 3 questions Peer pressure plays a negative role in triggering smoking habits in adolescents. As a school captain list any two activities you would like to organize with the help of senior students of your school and any other two activities you would like your school authorities to organize for the students to tackle this problem. Explain how these activities will help in doing so.

CBSE Question Paper 2015 Delhi Set-2

CBSE Question Paper 2015 Delhi Set-2, this question paper has 26 questions and this question paper have four Section A,B,C,D,E Section A contains 5 questions and section B contains 5 questions,section C contains 12 questions, section D contains 1 vbq, Section E contains 3 questions Name the vegetative propagules in the following angiosperms:

 

 

 

 

CBSE Question Paper 2015 Delhi Set-3

CBSE Question Paper 2015 Delhi Set-3, this question paper has 26 questions and this question paper have four Section A,B,C,D,E Section A contains 5 questions and Section B contains 5 questions, Section C contains 12 questions, Section D contains 1 vbq, Section E contains 3 questions Mention the economic value of Apis indica.

Question Paper 2015 Set-3 comp.outside Delhi

Class 12 biology Last year paper 2015 Set-3 compartment outside Delhi, this question paper has 26 questions and this question paper have four Section A,B,C,D,E Section A contains 5 questions and section B contains 5 questions,section C contains 12 questions, section D contains 1 vbq, Section E contains 3 questions What is ecological succession? Where and why would the rate of succession be faster in newly created pond or a forest destroyed by a forest fire?

 

Question Paper 2014 Delhi Set-1

Class 12 biology Last year paper 2014. This question paper consist of section A, B, C and D. A contain 8 questions of one mark each, section B is of 10 questions of two marks each, section C is of 9 questions of three marks each and section D is of 3 questions of five marks each.

Question Paper 2014 Delhi Set-2

Class 12 biology Last year paper 2014 set-2,this question paper has 30 question and this questions paper have four Section A,B,C,D Section A contains 8 questions and section B contains 10 questions,section C contains  9 questions, section D contains 3 questions Q1.State the cause of Accelerated Eutrophication

 

Question Paper 2014 Delhi Set-3

Class 12 biology Last year paper 2014 set-3,this question paper has 30 questions and this question paper have four Section A,B,C,D Section A contains 8 questions and section B contains 10 questions,section C contains  9 questions, section D contains 3 questions Construct an age pyramid which reflects a stable growth status of human population.

 

 

Question Paper 2014 Set-1 outside Delhi

Class 12 biology Last year paper 2014 set-1 outside Delhi, this question paper has 30 questions and this question paper have four Section A,B,C,D Section A contains 8 questions and section B contains 10 questions,section C contains  9 questions, section D contains 3 questions State Gause's Competitive Exclusion Principle.

 

 

Question Paper 2014 Set-2 outside Delhi

Class 12 biology Last year paper 2014 set-2 outside Delhi, this question paper has 30 questions and this question paper have four Section A,B,C,D Section A contains 8 questions and section B contains 10 questions,section C contains  9 questions, section D contains 3 questions Name the vegetative propagules in the following:(a) Agave (b) Bryophyllum

 

 

Question Paper 2014 Set-3 outside Delhi

Class 12 biology Last year paper 2014 set-3 outside Delhi, this question paper has 30 questions and this question paper have four Section A,B,C,D Section A contains 8 questions and section B contains 10 questions,section C contains  9 questions, section D contains 3 questions Write an alternate source of protein for animal and human nutrition.

 

 

Question Paper 2014 Set-1 foreign

Class 12 biology Last year paper 2014 set-1foreign,this question paper has 30 question and this question paper have four Section A,B,C,D Section A contains 8 questions and section B contains 10 questions,section C contains  9 questions, section D contains 3 questions Name the host cells in which micro –injection technique is used to introduce an alien DNA.

Question Paper 2014 Set-2 foreign

Class 12 biology Last year paper 2014 set-2 foreign, this question paper has 30 questions and this question paper have four Section A,B,C,D Section A contains 8 questions and section B contains 10 questions,section C contains  9 questions, section D contains 3 questions Write the names of the enzymes that are used for isolation of DNA form bacterial and fungal cells respectively for Recombinant DNA Technology.

 

 

Question Paper 2014 Set-3 foreign

Class 12 biology Last year paper 2014 set-3 foreign, this question paper has 30 questions and this question paper have four Section A,B,C,D Section A contains 8 questions and section B contains 10 questions,section C contains  9 questions, section D contains 3 questions In spite of being non- polluting why are there great apprehensions in using nuclear energy for generating electricity?

 

 

Question Paper 2014 Delhi Set-1 compartment

Class 12 biology Last year paper 2014 Set-1 compartment, this question paper has 30 questions and this question paper have four Section A,B,C,D Section A contains 8 questions and section B contains 10 questions,section C contains  9 questions, section D contains 3 questions Name the host plant and that Meloidogyne incognitia infects. Explain the role of Agrobacterium in the production of ds-RNA in the host plant.

Question Paper 2014 Delhi Set-2 compartment

Class 12 biology Last year paper 2014 Set-2 compartment, this question paper has 30 questions and this question paper have four Section A,B,C,D Section A contains 8 questions and section B contains 10 questions,section C contains  9 questions, section D contains 3 questions Where is good ozone present? Why is it called so?

 

 

Question Paper 2014 Delhi Set-3 compartment

Class 12 biology Last year paper 2014 Set-3 compartment, this question paper has 30 questions and this question paper have four Section A,B,C,D Section A contains 8 questions and section B contains 10 questions,section C contains  9 questions, section D contains 3 questions How many kinds of phenotypes would you expect in F2 generation in a monohybrid cross exhibiting co-dominance?

 

 

Question Paper 2014 Set-1 compartment outside Delhi

Class 12 biology Last year paper 2014 Set-1 compartment outside Delhi, this question paper has 30 questions and this question paper have four Section A,B,C,D Section A contains 8 questions and section B contains 10 questions,section C contains  9 questions, section D contains 3 questions Write the level of biodiversity represented by a mangrove. Give another example falling in the same level.

 

 

Question Paper 2014 Set-2 compartment outside Delhi

Class 12 biology Last year paper 2014 Set-2 compartment outside Delhi, this question paper has 30 questions and this question paper have four Section A,B,C,D Section A contains 8 questions and section B contains 10 questions,section C contains  9 questions, section D contains 3 questions Do you support ‘Dope’ test being conducted on sportspersons participating in a prestigious athletic meet? Give three reasons in support of your answer.

 

Question Paper 2014 Set-3 compartment outside Delhi

Class 12 biology Last year paper 2014 Set-3 compartment outside Delhi, this question paper has 30 questions and this question paper have four Section A,B,C,D Section A contains 8 questions and section B contains 10 questions,section C contains  9 questions, section D contains 3 questions Suggest and describe a technique through which a virus-free healthy plant can be obtained from a diseased sugarcane plant.

Question Paper 2013 Delhi Set-1

Class 12 biology Last year paper 2013. There is no overall choice. however, an internal choice has been provided in one question of 2 marks., one question of 3 marks and two questions of 5 marks weight age. a student has to attempt only one of the alternatives is such questions

Question Paper 2012 Delhi Set-1

Class 12 biology Last year paper 2012. Why banana is considered a good example of parthenocarpy? Banana is considered a good example of parthenocarpy because it produces seedless fruit in the absence of successful fertilization.

Question Paper 2011 Delhi Set-2

Class 12 biology Last year paper 2011. There is no overall choice. however, an internal choice has been provided in one question of 2 marks., one question of 3 marks and two questions of 5 marks weight age. a student has to attempt only one of the alternatives is such questions.

Question Paper 2011 Delhi Set-1

Class 12 biology Last year paper 2011. Name the type of cell division that takes place in the zygote of an organism exhibiting haplontic life cycle. Meiosis. Write the scientific name of the microbe used for fermenting malted cereals and fruit juices. Ans. Saccharomyces cerevisiae

Question Paper 2010 Delhi Set-1

Class 12 biology Last year paper 2010. There is no overall choice. however, an internal choice has been provided in one question of 2 marks., one question of 3 marks and two questions of 5 marks weight age. a student has to attempt only one of the alternatives is such questions.

Question Paper 2010 Delhi Set-2

Class 12 biology Last year paper 2010. There is no overall choice. however, an internal choice has been provided in one question of 2 marks., one question of 3 marks and two questions of 5 marks weight age. a student has to attempt only one of the alternatives is such questions.

Question Paper 2009 Delhi Set-1


Class 12 biology Last year paper 2009. There is no overall choice. however, an internal choice has been provided in one question of 2 marks., one question of 3 marks and two questions of 5 marks weight age. a student has to attempt only one of the alternatives is such questions.

Question Paper 2008 Delhi Set-1


Class 12 biology Last year paper 2008. This question paper consist of section A, B, C and D. A contain 8 questions of one mark each, section B is of 10 questions of two marks each, section C is of 9 questions of three marks each and section D is of 3 questions of five marks each.

Question Paper 2008 Delhi Set-2


Class 12 biology Last year paper 2008. There is no overall choice. however, an internal choice has been provided in one question of 2 marks., one question of 3 marks and two questions of 5 marks weight age. a student has to attempt only one of the alternatives is such questions.

Question Paper 2008 Delhi Set-3


Class 12 biology Last year paper 2008. There is no overall choice. however, an internal choice has been provided in one question of 2 marks, one question of 3 marks and two questions of 5 marks weight age. a student has to attempt only one of the alternatives is such questions.

Question Paper 2007 Delhi Set-1

Class 12 biology Last year paper 2007. This question paper consist of section A, B, C and D. A contain 8 questions of one mark each, section B is of 10 questions of two marks each, section C is of 9 questions of three marks each and section D is of 3 questions of five marks each.

Question Paper 2007 Delhi Set-2


Class 12 biology Last year paper 2007. This question paper consist of section A, B, C and D. A contain 8 questions of one mark each, section B is of 10 questions of two marks each, section C is of 9 questions of three marks each and section D is of 3 questions of five marks each.

Question Paper 2007 Delhi Set-3


Class 12 biology Last year paper 2007. This question paper consist of section A, B, C and D. A contain 8 questions of one mark each, section B is of 10 questions of two marks each, section C is of 9 questions of three marks each and section D is of 3 questions of five marks each.

Question Paper 2006 Delhi Set-1

Class 12 biology Last year paper 2006. This question paper consist of section A, B, C and D. A contain 8 questions of one mark each, section B is of 10 questions of two marks each, section C is of 9 questions of three marks each and section D is of 3 questions of five marks each.

Question Paper 2006 Outside Delhi Set-1

Class 12 biology Last year paper 2006. This question paper consist of section A, B, C and D. A contain 8 questions of one mark each, section B is of 10 questions of two marks each, section C is of 9 questions of three marks each and section D is of 3 questions of five marks each.

Question Paper 2006 Comp. Delhi Set-1

Class 12 biology Last year paper 2006. This question paper consist of section A, B, C and D. A contain 8 questions of one mark each, section B is of 10 questions of two marks each, section C is of 9 questions of three marks each and section D is of 3 questions of five marks each.

Question Paper 2006 Comp Outside Delhi set-1

Class 12 biology Last year paper 2006. This question paper consist of section A, B, C and D. A contain 8 questions of one mark each, section B is of 10 questions of two marks each, section C is of 9 questions of three marks each and section D is of 3 questions of five marks each.

Question Paper 2005 Delhi Set-1

Class 12 biology Last year paper 2005. This question paper consist of section A, B, C and D. A contain 8 questions of one mark each, section B is of 10 questions of two marks each, section C is of 9 questions of three marks each and section D is of 3 questions of five marks each.

Question Paper 2005 Outside Delhi Set-1

Class 12 biology Last year paper 2005. This question paper consist of section A, B, C and D. A contain 8 questions of one mark each, section B is of 10 questions of two marks each, section C is of 9 questions of three marks each and section D is of 3 questions of five marks each.

Question Paper 2005 Comp Delhi Set-1

Class 12 biology Last year paper 2005. This question paper consist of section A, B, C and D. A contain 8 questions of one mark each, section B is of 10 questions of two marks each, section C is of 9 questions of three marks each and section D is of 3 questions of five marks each.



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