CBSE Class 12 Biology Question Paper 2005 (2)

CBSE Class 12 Biology Question Paper 2005 (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

Q1. Name the heaviest and longest bone in the human body.

Q2. Which type of UV radiations can be lethal to organisms?

Q3. Why does thinning of bones usually start occurring in human females at about 50 years of age?

Q4. What is polyethylene glycol used for in somatic hybridization?

Q5. Drosera carries out photosynthesis and still traps insects why? 

SECTION - B

Q6. What is auxetic growth? Give two examples of organisms showing this kind of growth.

Q7. What is a transgenic crop? Which plant is used to produce blood anti-coagulant protein? What is this protein called?

Q8. Why do temperate regions show a lower value of primary productivity as compared to tropical regions? Give two reasons.

Q9. What is oxidative decarboxylation? What happens to pyruvate immediately after this reaction?Name the enzyme involved in this reaction.

Q10. Which animals suffer from Rinderpest? Give its two early symptoms and explain how it spreads.

Q11. List any four objectives of the Wild-life (Protection) Act, 1972, amended in 1991.

Q12. An Rh-negative mother has safely delivered her first Rh-positive child. Discuss the problems that can arise as a result of it and can affect a subsequent pregnancy.

Q13. Explain symbiotic nitrogen fixation in leguminous plants.

Q14. What is cretinism? Give its any two causes.

 Please click the link below to download pdf file of CBSE Class 12 Biology Question Paper 2005 (2)