CBSE Class 12 Biology Boards 2020 Sample Paper Solved

Read and download PDF of CBSE Class 12 Biology Boards 2020 Sample Paper Solved designed as per the latest curriculum and examination pattern for Class 12 issued by CBSE, NCERT and KVS. The latest Class 12 Biology Sample Papers have been provided with solutions so that the students can solve these practice papers and then compare their answers. This will help them to identify mistakes and improvement areas in Biology Class 12 which they need to study more to get better marks in Class 12 exams. After solving these guess papers also refer to solved Class 12 Biology Question Papers available on our website to build strong understanding of the subject

Sample Paper for Class 12 Biology Pdf

Students can refer to the below Class 12 Biology Sample Paper designed to help students understand the pattern of questions that will be asked in Class 12 exams. Please download CBSE Class 12 Biology Boards 2020 Sample Paper Solved

Biology Class 12 Sample Paper

CBSE Class 12 Biology Boards 2020 Sample Paper Solved. CBSE has recently released the class 12 sample papers for subject Biology. These suggested sample papers are released every year by CBSE ahead of the class 12 board exams so that the students can understand the pattern of question paper and type of questions which is expected to come in the Class 12 board exams. Students can refer to the attached question paper along with marking scheme to understand what they can expect in the board exams in 2020. Its always better to solve the question paper first and then refer to provided answers.

SECTION – A
1. Androgens are synthesized by:
a.) Sertoli Cells
b.) Leydig cells
c.) Seminal vesicles
d.) Bulbourethral gland
 
OR
A procedure that finds use in testing for genetic disorders, but is also misused for female foeticide is:
a.) Lactational amenorrhea
b.) Amniocentesis
c.) Artificial insemination
d.) Parturition
 
2. Which type of immune response is responsible for the rejection of tissues/organs in the patient’s body post transplantation?
a.) auto-immune response
b.) humoral immune response
c.) physiological immune response
d.) cell-mediated immune response
 
OR
Rheumatoid arthritis is caused when . . .
i.) Lymphocytes become more active
ii.) Body attacks self cells
iii.) More antibodies are produced in the body
iv.) The ability to differentiate pathogens or foreign molecules from self-cells is lost
 
Choose the correct answer from the options given below:
a.) i and ii
b.) iii and iv
c.) i and iii
d.) ii and iv

3. Name the enzymes 'P' and 'Q' that are involved in the processes given below.

CBSE-Class-12-Biology-Boards-2020-Sample-Paper-Solved 1

a.) Enzyme P-Exonuclease and Enzyme Q-Permease
b.) Enzyme P-Exonuclease and Enzyme Q- Ligase
c.) Enzyme P-Endonuclease and Enzyme Q- Permease
d.) Enzyme P-Restriction endonuclease and Enzyme Q-Ligase
 
4. A biotechnologist wanted to create a colony of E.coli possessing the plasmid pBR322, sensitive to Tetracycline. Which one of the following restriction sites would he use to ligate a foreign DNA?
a.) Sal I
b.) Pvu I
c.) EcoRI
d.) Hind III
 
5. The most important cause of biodiversity loss is:
a.) Over exploitation of economic species
b.) Habitat loss and fragmentation
c.) Invasive species
d.) Breakdown of plant-pollinator relationships
 
SECTION B
 
6. How does an encysted Amoeba reproduce on return of favourable conditions?
 
OR
What are gemmules and conidia? Name one organism each in which these are formed?
 
7. Name any two copper releasing IUD’s. State how they act as a contraceptive. 
 
8. Why is it not possible to study the pattern of inheritance of traits in human beings,the same way as it is done in pea plant? Name the alternate method employed for such an analysis of human traits.



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Sample Paper Biology Class 12

We hope you liked the above provided CBSE Class 12 Biology Boards 2020 Sample Paper Solved. To get an understanding of the type of questions which were asked in exams, it is important for Class 12 students to refer to CBSE Class 12 Biology Boards 2020 Sample Paper Solved that we have provided above. Students can download the Sample Paper for Class 12 Biology which will be coming in the exams so that you can practise them and solve all types of questions that can be asked in exams. If you do CBSE Class 12 Biology Boards 2020 Sample Paper Solved for Class 12 Biology you will easily understand the way examination Sample Paper are set by teachers.

Class 12 Biology Sample Paper

The latest Sample Paper CBSE Class 12 Biology Boards 2020 Sample Paper Solved covers all the topics which have been suggested by CBSE in their Class 12 Biology syllabus for the current year. By doing CBSE Class 12 Biology Boards 2020 Sample Paper Solved you will understand the regular questions and MCQ questions for Class 12 Biology which are always asked and learn them so that you can get full marks in those questions.

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Biology Sample Paper Class 12 with Solutions

We have provided CBSE Class 12 Biology Boards 2020 Sample Paper Solved with solutions. You will be able to understand the type of answers which you should write in Class 12 Biology exams to score good marks. You should attempt all the last year question paper for Class 12 and Class 12 Biology MCQ Test in examination conditions at home and then compare their answers with the solutions provided by our teachers. This way you will be able to identify your weak areas and also understand how the teachers of Class 12 Biology set their questions in the exams.

CBSE Class 12 Biology Sample Paper with solutions

We have provided the current year Class 12 Biology Sample Paper. Students who want to practice Sample Paper from all previous years can easily get them on studiestoday. We are the leading website in India from which you can download all the latest Class 12 Biology study material for free as per the CBSE syllabus for Class 12 Biology for the current academic year.

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