CBSE Class 12 Biology Solved Question Paper 2011

Short Answer Type

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Identify the type of the given ecological pyramid and give one example each of pyramid of number and pyramid of biomass in such cases.

The given pyramid is an inverted pyramid. 

Inverted pyramid of biomass in a lake- Phytoplankton ----> Zooplankton-----> Fishes.

Inverted pyramid of number - Tree----> Insects-----> Birds.

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    The above graph shows Species-Area relationship. Write the equation of the curve “a‟ and explain.
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    Describe the Lactational Amenorrhea method of birth control.

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    The cell division involved in gamete formation is not of the same type in different organisms. Justify.

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    State the use of Biodiversity in modern agriculture. 

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    Differentiate between in-situ and ex-situ approaches of conservation / of biodiversity.

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     Write the full form of VNTR. How is VNTR different from “Probe‟?

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    Differentiate between benign and malignant tumors.

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    Name the type of bioreactor shown. Write the purpose for which it is used:


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    Draw a labelled diagram of the reproductive system in a human female.

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