CBSE Class 12 Biology Question Paper All India with Answers 2017 (2)

CBSE Class 12 Biology Question Paper All India with Answers 2017 (2). Students can download the last year question papers using the link below. Free download of examination question papers with solutions. Last 10 year question papers should be practised to get better marks in examinations.

 SECTION A

1. A herd of cattle is showing reduced fertility and productivity. Provide one reason and one suggestion to overcome this problem.

2. An electrostatic precipitator in a thermal power plant is not able to generate high voltage of several thousands. Write the ecological implication because of it.

3. Name the specific type of gene that is incorporated in a cotton plant to protect the plant against cotton boll worm infestation

4. State two postulates of Oparin and Haldane with reference to origin of life.

5. Name the type of cross that would help to find the genotype of a pea plant bearing violet flowers.

SECTION B

6. Name the type of immunity the colostrum provides to a newborn baby.Write giving an example where this type of immunity should be provided to a person.

7. List four benefits to human life by eliminating the use of CFCs.

                                                 OR

Suggest two practices giving one example of each, that help protect rare or threatened species.

8. Write the binomials of two fungi and mention the products/bioactive molecules they help to produce.

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