CBSE Class 12 Biology Question Papers Delhi 2013 (4)

CBSE Class 12 Biology Question Papers Delhi 2013 (4). 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. 

1. What is net primary productivity ?

2. Why do sharks retain urea in their body fluids ?

3. A plant cell is kept in a hypotonic solution. What will happen to the solute potential of this cell ?

4. What is the use of polyethylene glycol in somatic hybridization ?

5. Name two animals in which the whole animal can be regenerated from small fragments of the body.

6. List any two characteristics of Osteoporosis. Mention two categories of individuals that are susceptible to this disorder.

7. If you breathe over the surface of a leaf repeatedly in quick succession, what will happen to the stomata of the leaf ? Explain giving reasons.

8. Differentiate between keystone species and edge species.

9.How do tropical deciduous forests change in appearance during rainy and summer seasons ? Name two dominant species of such forests in India.

10. List any four characteristic symptoms of a schizophrenic.

11. What is Batesian mimicry ? Describe its one example.

Please click the link below to download pdf file of CBSE Class 12 Biology Question Papers Delhi 2013 (4).