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Class 12th CBSE 2014 Biology Paper Set 3

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Class-12th CBSE
Subject-Biology Set 3
year-2014    

Here is some questions:-
SECTION - A

1. Mention the type of host cells suitable for the gene guns to introduce an alien DNA.
SECTION - B
1. State the disadvantage of inbreeding among cattle. How it can be overcome ?
SECTION - C
1. How did the process of RNA interference help to control the nematode from infecting roots of tobacco plants ? Explain.
SECTION - D
1. (a) Name the technology that has helped the scientists to propagate on large scale the desired crops in short duration. List the steps carried out to propagate the crops by the said technique.

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Download School chalao biology cbse 2014 set 3.pdf

 

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