#1
20th November 2014, 09:03 AM
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CBSE 12th class Science question paper
Hi can you please provide me the question paper of Biology of CBSE 12th science?
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#2
20th November 2014, 12:14 PM
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Re: CBSE 12th class Science question paper
Ok, as you want the question paper of Biology of CBSE 12th science so here I am providing you CBSE 12th Science Biology question paper 1.Name the material used as matrix in gel-electrophoresis and mention its role. 2. State one reason for adding blue-green algae to the agricultural soil. 3.Give one example each of a fungus which reproduces by : (a) budding (b) conidia 4.State one reason why breast-feeding the baby acts as a natural contraceptive for the mother. 5.Identify and write the correct statement : (a) In Grasshopper males two sex chromosomes are X and Y type. (b) In Grasshopper males there exist XO type of sex-determinants. 6. What will happen if DNA replication is not followed by cell division in a eukaryotic cell ? 7. Name the two gases contributing maximum to the green house effect. 8.Write the level of biodiversity represented by a mangrove. Give another example falling in the same level. 9 ‘Fish mortality increases with influx of nutrients in a fresh-water body.’ Write two reasons. How will the influx of nutrients affect the BOD level of this water body ? 10 Provide two reasons that make the count of prokaryotic species difficult. CBSE 12th Science Biology question paper Half question paper is in pdf file atteched.......... |