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CBSE Class 12 Biology 2017 Sample Paper

Dec 20, 2016 13:00 IST

    CBSE sample paper for class 12 Biology 2017 is available for download in PDF format. With this article students can download the complete sample paper for class 12 Biology 2017 along with hints or marking scheme of the paper.

    About CBSE Sample Paper for Class 12 Biology 2017:

    Every year CBSE board releases CBSE sample papers for class 12 & class 10 few months before the CBSE board exams. With these CBSE sample papers, students of class 12 & class 10 get an idea about the latest examination pattern and level of questions to be asked in the coming CBSE board exams.

    CBSE Syllabus for Class 12 Biology 2017

    CBSE sample paper for class 12 Biology board exam 2017 is released by CBSE along with sample papers of other subjects. Students of CBSE Class 12 must solve this sample paper and after that they should also match their solutions with hints or marking scheme provided with this sample paper. Questions of CBSE sample paper for class 12 Biology are very important for CBSE class 12 Biology board examination 2017.

    Inside CBSE Sample Paper for Class 12 Biology 2017:

    In this sample paper for class 12 Biology 2017, there are

    There are a total of 26 questions & five sections in the question paper

    Sec. A contains question number 1 to 5, Very Short Answer type questions of one mark each

    Sec. B contains question number 6 to 10, Short Answer type (I) questions of two marks each

    Sec. C contains question number 11 to 22, Short Answer type (II) questions of three marks each

    Sec. D contains question number 23, Value Based Question of four marks

    Sec. E contains question number 24 to 26, Long Answer type questions of five marks each

    CBSE Class 12 Biology: Last 5 Years Question Papers (Solved)

    No overall choices are provided in the sample paper for class 12 Biology, however, an internal choice is provided in 1 question of two marks, 1 question of three marks and all 3 questions of five marks. Students need to attempt any one of the questions out of the two given in the question paper with the same question number. Marking scheme or hints of the sample paper for CBSE class 12 biology 2017 is also available after the questions.

    Some questions from CBSE Sample Paper for Class 12 Biology 2017 are given below:

    Question

    Marks

    1. A certain tissue, of a plant, infected with TMV was used to obtain a new plant using tissue culture technique. Identify the technique used and reason out the possibility of obtaining a new healthy plant

    1

    2. State a method of cellular defense which works in all eukaryotic organisms

    1

    3. In case of an infertile couple, the male partner can inseminate normally but the mobility of sperms is below 40 percent. Judge, which kind of ART is suitable in this situation to form an embryo in the laboratory, without involving a donor?

    1

    4. PCR requires very high temperature conditions where most of the enzymes get denatured. How was this problem resolved in a PCR?

    1

    5. If two genes are located far apart from each other on a chromosome, what will be its effect on the frequency of recombination?

    1

    6. The alarming population growth is leading to scarcity of basic requirements. Suggest with reason, any two population control measures other than contraception to address the situation.

    2

    7. Both Down’s syndrome and Turner’s syndrome are examples of chromosomal disorders. Cite the differences between the two, at the chromosomal level.

    2

    8. To reduce the percentage of population suffering from hunger and malnutrition, microbes are grown on a large scale to act as food supplements. Mention any two microbes used as food supplement and suggest their role.

    OR

    Success rate of artificial insemination in cattle is fairly low. Identify any other technique to improve the successful production of hybrids. State two advantages of this technique.

    2

    9. (a) A patient who is suffering from myocardial infarction is given a clot buster as part of his treatment. Mention the clot buster administered and its microbial source.

    (b) A person recuperating from illness is advised to have curd regularly. Why?

    2

    Download

    Questions of sample paper for class 12 Biology 2017

    Key or Marking Scheme of the complete sample paper for class 12 Biology 2017

    Complete sample paper for class 12 Biology 2017 with Marking Scheme

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