CBSE Class 12 Biology Question Paper 2014 Set 2 - Delhi

CBSE Class 12 Biology Question Paper 2014 Set 2 - Delhi. 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. State the cause of Accelerated Eutrophication.

Ans. Pollutants from human activities /effluents from industries / effluents from home / sewage /agricultural (chemical) wastes radically accelerate the ageing process.

2. Identify ‘a’ and ‘b’ in the figure given below representing proportionate number of major vertebrate taxa.

Ans. (a) Mammals ,

(b) Amphibians = ½ + ½

3. Give an example of an organism that enters ‘diapause’ and why.

Ans. (Many species of) Zooplankton, unfavourable condition = ½ + ½

4. Name the two intermediate hosts which the human liver fluke depends on to complete its life cycle so as to facilitate parasitization of its primary host.

Ans. Snail and Fish = ½ + ½

5. Mention the type of host cells suitable for the gene guns to introduce an alien DNA.

Ans. Plant cells

6. Name any two types of cells which act as ‘Cellular barriers’ to provide Innate Immunity in humans.

Ans. Polymorpho-nuclear Leukocytes / Neutrophils / Monocyte , Natural Killer (type of lymphocyte), macrophages

Please click the link below to download pdf file of CBSE Class 12 Biology Question Paper 2014 Set 2 - Delhi.