CBSC 12th Biology for Blind Candidate Question Paper 2013 Free Download

CBSC 12th Biology for Blind Candidate Question Paper 2013 Free Download

CBSC Class 12th Biology for Blind Candidate Question Paper 2013, CBSC Delhi Class 12th (XII) 2013 Biology for Blind Candidate Question Paper CBSC Class XII Biology for Blind Candidate Question Paper 2013 outside Delhi Students Free Download CBSC 12th  – XII Biology for Blind Candidate Question Paper for Foreign Students with Answers and Solution 2013 CBSC Board Exam Papers for Class 12 (XII) std CBSC 2013 Biology for Blind Candidate Question Bank with Full Details.

                                                                  Biology for Blind Candidate 

                                                                               Time : 3 Hours      

                                                                        Maximum Marks : 70

1. State one reason why maximum protection is provided to biodiversity ‘hot-spot’ regions.

2. How many ova/ovum does a human female normally release in one menstrual cycle?

3. Why are the antibodies produced by the B-lymphocytes referred to as H2L9? Give a reason.

4. State the function of mast cells in allergy response.

5. Mention the role of ‘ori’ in a cloning vector. 

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