CBSE Biology All India Past year paper - 2016, Class 12 | Additional Study Material for NEET PDF Download

 Page 1


  
 
CBSE XII  |  Biology 
Board Paper 2016 – All India – Set 1 
 
     
CBSE 
 Class XII Biology (Theory) 
Board Paper 2016 – All India (Set 1) 
Time: 3 hrs Total Marks: 70 
 
 
General Instruction: 
 
1. There are total 26 questions and five sections in the question paper. 
2. All questions are compulsory. 
3. Section A contains questions number 1 to 5; very short answer type questions of 1 
mark each. 
4. Section B contains questions number 6 to 10, short-answer type I questions of 2 marks 
each. 
5. Section C contains questions number 11 to 22, short answer type II questions of 3 
marks each. 
6. Section D contains question number 23, value based question of 4 marks. 
7. Section E contains questions number 24 to 26, long-answer type questions of 5 marks 
each. 
8. There is no overall choice in the question paper; however, an internal choice is 
provided in one question of 2 marks, one question of 3 marks and all the three 
questions of 5 marks. In these questions, an examinee is to attempt any of the two given 
alternatives. 
 
 
 
SECTION A 
1. A male honeybee has 16 chromosomes whereas its female has 32 chromosomes. 
Give one reason. [1] 
 
2. Mention the role of ‘genetic mother’ in MOET. [1] 
 
3. What is biopiracy? [1] 
 
4. Mention two advantages for preferring CNG over diesel as an automobile fuel. [1] 
 
5. Write the probable differences in eating habits of Homo habilis and Homo erectus. [1] 
 
  
Page 2


  
 
CBSE XII  |  Biology 
Board Paper 2016 – All India – Set 1 
 
     
CBSE 
 Class XII Biology (Theory) 
Board Paper 2016 – All India (Set 1) 
Time: 3 hrs Total Marks: 70 
 
 
General Instruction: 
 
1. There are total 26 questions and five sections in the question paper. 
2. All questions are compulsory. 
3. Section A contains questions number 1 to 5; very short answer type questions of 1 
mark each. 
4. Section B contains questions number 6 to 10, short-answer type I questions of 2 marks 
each. 
5. Section C contains questions number 11 to 22, short answer type II questions of 3 
marks each. 
6. Section D contains question number 23, value based question of 4 marks. 
7. Section E contains questions number 24 to 26, long-answer type questions of 5 marks 
each. 
8. There is no overall choice in the question paper; however, an internal choice is 
provided in one question of 2 marks, one question of 3 marks and all the three 
questions of 5 marks. In these questions, an examinee is to attempt any of the two given 
alternatives. 
 
 
 
SECTION A 
1. A male honeybee has 16 chromosomes whereas its female has 32 chromosomes. 
Give one reason. [1] 
 
2. Mention the role of ‘genetic mother’ in MOET. [1] 
 
3. What is biopiracy? [1] 
 
4. Mention two advantages for preferring CNG over diesel as an automobile fuel. [1] 
 
5. Write the probable differences in eating habits of Homo habilis and Homo erectus. [1] 
 
  
  
 
CBSE XII  |  Biology 
Board Paper 2016 – All India – Set 1 
 
     
SECTION B 
 
6. A single pea plant in your kitchen garden produces pods with viable seeds, but the 
individual papaya plant does not. Explain. [1] 
 
7. Following are the features of genetic codes. What does each one indicate? 
         Stop codon; Unambiguous codon; Degenerate codon; Universal codon. [1] 
 
8. Suggest four important steps to produce a disease resistant plant through 
conventional plant breeding technology. [1] 
 
9. Name a genus of baculovirus. Why are they considered good bio-control agents?  [2] 
 
10. Explain the relationship between CFC’s and Ozone in the stratosphere. 
 
OR 
 
            Why are scared groves highly protected? [2] 
 
 
  
Page 3


  
 
CBSE XII  |  Biology 
Board Paper 2016 – All India – Set 1 
 
     
CBSE 
 Class XII Biology (Theory) 
Board Paper 2016 – All India (Set 1) 
Time: 3 hrs Total Marks: 70 
 
 
General Instruction: 
 
1. There are total 26 questions and five sections in the question paper. 
2. All questions are compulsory. 
3. Section A contains questions number 1 to 5; very short answer type questions of 1 
mark each. 
4. Section B contains questions number 6 to 10, short-answer type I questions of 2 marks 
each. 
5. Section C contains questions number 11 to 22, short answer type II questions of 3 
marks each. 
6. Section D contains question number 23, value based question of 4 marks. 
7. Section E contains questions number 24 to 26, long-answer type questions of 5 marks 
each. 
8. There is no overall choice in the question paper; however, an internal choice is 
provided in one question of 2 marks, one question of 3 marks and all the three 
questions of 5 marks. In these questions, an examinee is to attempt any of the two given 
alternatives. 
 
 
 
SECTION A 
1. A male honeybee has 16 chromosomes whereas its female has 32 chromosomes. 
Give one reason. [1] 
 
2. Mention the role of ‘genetic mother’ in MOET. [1] 
 
3. What is biopiracy? [1] 
 
4. Mention two advantages for preferring CNG over diesel as an automobile fuel. [1] 
 
5. Write the probable differences in eating habits of Homo habilis and Homo erectus. [1] 
 
  
  
 
CBSE XII  |  Biology 
Board Paper 2016 – All India – Set 1 
 
     
SECTION B 
 
6. A single pea plant in your kitchen garden produces pods with viable seeds, but the 
individual papaya plant does not. Explain. [1] 
 
7. Following are the features of genetic codes. What does each one indicate? 
         Stop codon; Unambiguous codon; Degenerate codon; Universal codon. [1] 
 
8. Suggest four important steps to produce a disease resistant plant through 
conventional plant breeding technology. [1] 
 
9. Name a genus of baculovirus. Why are they considered good bio-control agents?  [2] 
 
10. Explain the relationship between CFC’s and Ozone in the stratosphere. 
 
OR 
 
            Why are scared groves highly protected? [2] 
 
 
  
  
 
CBSE XII  |  Biology 
Board Paper 2016 – All India – Set 1 
 
     
SECTION C 
 
11.  
(a) Name the organic material exine of the pollen grain is made up of. How is this 
material advantageous to pollen grain? 
(b) Still it is observed that it does not form a continuous layer around the pollen 
grain. Give reason. 
(c) How are ‘pollen banks’ useful? [2] 
 
OR 
(a) Mention the problems that are taken care of by Reproduction and Child Health 
Care programme. 
(b) What is amniocentesis and why there is a statutory ban on it? 
 
12. What is a test cross? How can it decipher the heterozygosity of a plant? [2] 
 
13.  
(a) What do ‘Y’ and ‘B’ stand for in ‘YAC’ and ‘BAC’ used in Human Genome 
Project (HGP). Mention their role in the project. 
(b) Write the percentage of the total human genome that codes for proteins and the 
percentage of discovered genes whose functions are known as observed during 
HGP. 
(c) Expand ‘SNPs’ identified by scientists in HGP [2] 
 
14. Differentiate between homology and analogy. Give one example of each. [2] 
 
15.  
(a) It is generally observed that the children who had suffered from chicken – pox in 
their childhood may not contract the same disease in their adulthood. Explain 
giving reasons the basics of such immunity in an individual. Name this kind of 
immunity. 
(b) What are interferons? Mention their role. [2] 
 
16.  
(a) Write the two limitations of traditional breeding technique that led to promotion 
of micro propagation. 
(b) Mention two advantages of micro propagation. 
(c) Give two examples where it is commercially adopted. [2] 
 
17.  
(a) How do organic farmers control pests? Give two examples. 
(b) State the difference in their approach from that of conventional pest control 
methods. 
Page 4


  
 
CBSE XII  |  Biology 
Board Paper 2016 – All India – Set 1 
 
     
CBSE 
 Class XII Biology (Theory) 
Board Paper 2016 – All India (Set 1) 
Time: 3 hrs Total Marks: 70 
 
 
General Instruction: 
 
1. There are total 26 questions and five sections in the question paper. 
2. All questions are compulsory. 
3. Section A contains questions number 1 to 5; very short answer type questions of 1 
mark each. 
4. Section B contains questions number 6 to 10, short-answer type I questions of 2 marks 
each. 
5. Section C contains questions number 11 to 22, short answer type II questions of 3 
marks each. 
6. Section D contains question number 23, value based question of 4 marks. 
7. Section E contains questions number 24 to 26, long-answer type questions of 5 marks 
each. 
8. There is no overall choice in the question paper; however, an internal choice is 
provided in one question of 2 marks, one question of 3 marks and all the three 
questions of 5 marks. In these questions, an examinee is to attempt any of the two given 
alternatives. 
 
 
 
SECTION A 
1. A male honeybee has 16 chromosomes whereas its female has 32 chromosomes. 
Give one reason. [1] 
 
2. Mention the role of ‘genetic mother’ in MOET. [1] 
 
3. What is biopiracy? [1] 
 
4. Mention two advantages for preferring CNG over diesel as an automobile fuel. [1] 
 
5. Write the probable differences in eating habits of Homo habilis and Homo erectus. [1] 
 
  
  
 
CBSE XII  |  Biology 
Board Paper 2016 – All India – Set 1 
 
     
SECTION B 
 
6. A single pea plant in your kitchen garden produces pods with viable seeds, but the 
individual papaya plant does not. Explain. [1] 
 
7. Following are the features of genetic codes. What does each one indicate? 
         Stop codon; Unambiguous codon; Degenerate codon; Universal codon. [1] 
 
8. Suggest four important steps to produce a disease resistant plant through 
conventional plant breeding technology. [1] 
 
9. Name a genus of baculovirus. Why are they considered good bio-control agents?  [2] 
 
10. Explain the relationship between CFC’s and Ozone in the stratosphere. 
 
OR 
 
            Why are scared groves highly protected? [2] 
 
 
  
  
 
CBSE XII  |  Biology 
Board Paper 2016 – All India – Set 1 
 
     
SECTION C 
 
11.  
(a) Name the organic material exine of the pollen grain is made up of. How is this 
material advantageous to pollen grain? 
(b) Still it is observed that it does not form a continuous layer around the pollen 
grain. Give reason. 
(c) How are ‘pollen banks’ useful? [2] 
 
OR 
(a) Mention the problems that are taken care of by Reproduction and Child Health 
Care programme. 
(b) What is amniocentesis and why there is a statutory ban on it? 
 
12. What is a test cross? How can it decipher the heterozygosity of a plant? [2] 
 
13.  
(a) What do ‘Y’ and ‘B’ stand for in ‘YAC’ and ‘BAC’ used in Human Genome 
Project (HGP). Mention their role in the project. 
(b) Write the percentage of the total human genome that codes for proteins and the 
percentage of discovered genes whose functions are known as observed during 
HGP. 
(c) Expand ‘SNPs’ identified by scientists in HGP [2] 
 
14. Differentiate between homology and analogy. Give one example of each. [2] 
 
15.  
(a) It is generally observed that the children who had suffered from chicken – pox in 
their childhood may not contract the same disease in their adulthood. Explain 
giving reasons the basics of such immunity in an individual. Name this kind of 
immunity. 
(b) What are interferons? Mention their role. [2] 
 
16.  
(a) Write the two limitations of traditional breeding technique that led to promotion 
of micro propagation. 
(b) Mention two advantages of micro propagation. 
(c) Give two examples where it is commercially adopted. [2] 
 
17.  
(a) How do organic farmers control pests? Give two examples. 
(b) State the difference in their approach from that of conventional pest control 
methods. 
  
 
CBSE XII  |  Biology 
Board Paper 2016 – All India – Set 1 
 
     
 
18.  
(a) Name the selectable markers in the cloning vector pBR322? Mention the role 
they play. 
(b) Why is the coding sequence of an enzyme ? - galactosidase a preferred selectable 
marker in comparison to the ones named above? [2] 
 
19.  
(a) Why must a cell be made ‘competent’ in biotechnology experiments? How does 
calcium ion help in doing so? 
(b) State the role of ‘biolistic gun’ in biotechnology experiments. [3] 
 
20. Explain enzyme – replacement therapy to treat adenosine deaminase deficiency. 
Mention two disadvantages of this procedure. [3] 
 
21. Name and explain the type of interaction that exists in mycorrhizae and between 
cattle egret and cattle [3] 
 
22. Differentiate between primary and secondary succession provided one example of 
each. [3] 
 
  
Page 5


  
 
CBSE XII  |  Biology 
Board Paper 2016 – All India – Set 1 
 
     
CBSE 
 Class XII Biology (Theory) 
Board Paper 2016 – All India (Set 1) 
Time: 3 hrs Total Marks: 70 
 
 
General Instruction: 
 
1. There are total 26 questions and five sections in the question paper. 
2. All questions are compulsory. 
3. Section A contains questions number 1 to 5; very short answer type questions of 1 
mark each. 
4. Section B contains questions number 6 to 10, short-answer type I questions of 2 marks 
each. 
5. Section C contains questions number 11 to 22, short answer type II questions of 3 
marks each. 
6. Section D contains question number 23, value based question of 4 marks. 
7. Section E contains questions number 24 to 26, long-answer type questions of 5 marks 
each. 
8. There is no overall choice in the question paper; however, an internal choice is 
provided in one question of 2 marks, one question of 3 marks and all the three 
questions of 5 marks. In these questions, an examinee is to attempt any of the two given 
alternatives. 
 
 
 
SECTION A 
1. A male honeybee has 16 chromosomes whereas its female has 32 chromosomes. 
Give one reason. [1] 
 
2. Mention the role of ‘genetic mother’ in MOET. [1] 
 
3. What is biopiracy? [1] 
 
4. Mention two advantages for preferring CNG over diesel as an automobile fuel. [1] 
 
5. Write the probable differences in eating habits of Homo habilis and Homo erectus. [1] 
 
  
  
 
CBSE XII  |  Biology 
Board Paper 2016 – All India – Set 1 
 
     
SECTION B 
 
6. A single pea plant in your kitchen garden produces pods with viable seeds, but the 
individual papaya plant does not. Explain. [1] 
 
7. Following are the features of genetic codes. What does each one indicate? 
         Stop codon; Unambiguous codon; Degenerate codon; Universal codon. [1] 
 
8. Suggest four important steps to produce a disease resistant plant through 
conventional plant breeding technology. [1] 
 
9. Name a genus of baculovirus. Why are they considered good bio-control agents?  [2] 
 
10. Explain the relationship between CFC’s and Ozone in the stratosphere. 
 
OR 
 
            Why are scared groves highly protected? [2] 
 
 
  
  
 
CBSE XII  |  Biology 
Board Paper 2016 – All India – Set 1 
 
     
SECTION C 
 
11.  
(a) Name the organic material exine of the pollen grain is made up of. How is this 
material advantageous to pollen grain? 
(b) Still it is observed that it does not form a continuous layer around the pollen 
grain. Give reason. 
(c) How are ‘pollen banks’ useful? [2] 
 
OR 
(a) Mention the problems that are taken care of by Reproduction and Child Health 
Care programme. 
(b) What is amniocentesis and why there is a statutory ban on it? 
 
12. What is a test cross? How can it decipher the heterozygosity of a plant? [2] 
 
13.  
(a) What do ‘Y’ and ‘B’ stand for in ‘YAC’ and ‘BAC’ used in Human Genome 
Project (HGP). Mention their role in the project. 
(b) Write the percentage of the total human genome that codes for proteins and the 
percentage of discovered genes whose functions are known as observed during 
HGP. 
(c) Expand ‘SNPs’ identified by scientists in HGP [2] 
 
14. Differentiate between homology and analogy. Give one example of each. [2] 
 
15.  
(a) It is generally observed that the children who had suffered from chicken – pox in 
their childhood may not contract the same disease in their adulthood. Explain 
giving reasons the basics of such immunity in an individual. Name this kind of 
immunity. 
(b) What are interferons? Mention their role. [2] 
 
16.  
(a) Write the two limitations of traditional breeding technique that led to promotion 
of micro propagation. 
(b) Mention two advantages of micro propagation. 
(c) Give two examples where it is commercially adopted. [2] 
 
17.  
(a) How do organic farmers control pests? Give two examples. 
(b) State the difference in their approach from that of conventional pest control 
methods. 
  
 
CBSE XII  |  Biology 
Board Paper 2016 – All India – Set 1 
 
     
 
18.  
(a) Name the selectable markers in the cloning vector pBR322? Mention the role 
they play. 
(b) Why is the coding sequence of an enzyme ? - galactosidase a preferred selectable 
marker in comparison to the ones named above? [2] 
 
19.  
(a) Why must a cell be made ‘competent’ in biotechnology experiments? How does 
calcium ion help in doing so? 
(b) State the role of ‘biolistic gun’ in biotechnology experiments. [3] 
 
20. Explain enzyme – replacement therapy to treat adenosine deaminase deficiency. 
Mention two disadvantages of this procedure. [3] 
 
21. Name and explain the type of interaction that exists in mycorrhizae and between 
cattle egret and cattle [3] 
 
22. Differentiate between primary and secondary succession provided one example of 
each. [3] 
 
  
  
 
CBSE XII  |  Biology 
Board Paper 2016 – All India – Set 1 
 
     
SECTION D 
 
23. A large number of married couples the world over are childless. It is shocking to 
know that in India the female partner is often blamed for the couple being 
childless. 
(a) Why in your opinion the female partner is often blamed for such situations in 
India? Mention any two values that you as a biology student can promote to 
check this social evil. 
(b) State any two reasons responsible for the cause of infertility. 
(c) Suggest a technique that can help the couple to have a child where the problem 
is with male partner [3]