Subject

Biology

Class

CBSE Class 12

Pre Boards

Practice to excel and get familiar with the paper pattern and the type of questions. Check you answers with answer keys provided.

Sample Papers

Download the PDF Sample Papers Free for off line practice and view the Solutions online.
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 Multiple Choice QuestionsShort Answer Type

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11.

State the use of Biodiversity in modern agriculture. 


Biodiversity is very instrumental in development of agriculture –

1. It helps in the conservation and promotes farming of all wild and native variety of plants.

2. Agricultural biodiversity is the base of our agricultural food chain, development and safeguard of live-stocks etc. For ensuring food security to all peoples.

3. It promotes sustainable management of agricultural resources. 

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12.

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

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13.

Differentiate between benign and malignant tumors.

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14.
The above graph shows Species-Area relationship. Write the equation of the curve “a‟ and explain.
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15.

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

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16.

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

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17.

Identify the type of the given ecological pyramid and give one example each of pyramid of number and pyramid of biomass in such cases.
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18.

Describe the Lactational Amenorrhea method of birth control.

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19.

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


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20.

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

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