Question Pool Biodiversity and Conservation

Biodiversity and Conservation - SAMAGRA Question Pool & Answers | Class 12

Kerala Syllabus SAMAGRA SCERT SAMAGRA Question Pool for Class 12 Biology Biodiversity and Conservation

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Qn 1.

Biodiversity hotspots are to be protected and conserved
a)Do you agree with this justify your answer .



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Qn 2.

A)How many biodiversity hotspots are in the world and how many in India ?
B)why biodiversity hotspots need protection



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Qn 3.

India is one of the12 mega diversity countries of the world . Do you agree with this statement, give reason



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Qn 4.

Illustrate different patterns of biodiversity ?



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Qn 5.

The biological wealth of our planet has been declining rapidly and the accusing finger is clearly pointing to human activities.
a)Do you agree with this .justify your statement
b) Give examples for recent extinctions you have studied and list out the evils of biodiversity loss
of a region.



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Qn 6.

During a debate a student observed that new species are being added ( through speciation ) in to the earth's treasury of species , so we don’t bother about biodiversity loss.
a)Do you agree with this , justify your answer.
b)Explain evil quartet regarding biodiversity loss.



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Qn 7.

List out major reasons behind Bio diversity loss?



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Qn 8.

Comment on the comparative biodiversity of tropical, temperate and polar regions.



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Qn 9.

Robert May places the ...........................  at about 7 million.



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Qn 10.

How India became 12 th mega diversity country?



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Qn 11.

1) Complete the diagram

a)

 

 

 

 



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Qn 12.

Match the column A with B.

 

A

B

Long term ecosystem experiments

Robert May

Bio diversity

Paul Ehrlich

Species-Area richness

David Tilman

Global species diversity

Natural selection

Rivet popper hypothesis

Edward Wilson

Darwin

Alexander von Humbolt

 

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    Qn 13.

    Due to human activities the world is facing an accelerated rates of species

    extinctions now a days. Mention the four main causes of biodiversity losses or ‘ The Evil Quartet ’



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    Qn 14.

    In species area relationship graph ecologists have discovered that the value of Z lies in the range of 0.1 to 0.2, regardless of the taxonomic group or the region. Find out the value of Z if the slope of the line to be much steeper .



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    Qn 15.

    Observe the graph given below and answer the following questions;

     a) Identify S, A, C and Z in the graph

    b) Name the scientist who explained species area relationship.



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    Qn 16.

    Humans derive countless direct economic benefits from nature. Do you agree with it? Justify.

     



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    Qn 17.

    Mention the three different levels of biodiversity. Explain.



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    Qn 18.

    The reasons for conserving biodiversity can be grouped into three categories. Identify them.



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    Qn 19.

    Explain the terms “biodiversity hotspots” and “endemism”.



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    Qn 20.

    The National parks and Zoological parks are two types of biodiversity conservations.

    a) Identify the type of biodiversity conservations they belong.

    b)Differentiate them.

    c) Give two another examples for these two types of conservations.



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    Qn 21.

    The introduction of Nile perch into Lake Victoria lead to the extinction of Cichlid fish in the lake. Give reason for this biodiversity loss with the help of another example.



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    Qn 22.

    When a species becomes extinct, the plant and animal species associated with it in an obligatory way also become extinct.

    a) Identify the cause of extinction of this species.

    b) Explain it with an example.



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    Qn 23.

    When ‘need’ turns to ‘greed’, it leads to over -exploitation of natural resources. Do you agree with it? Justify.



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    Qn 24.

     Identify the cause of extinction of Steller’s sea cow, passenger pigeon etc. Explain the reason.



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    Qn 25.

    "Due to human activities the world is facing an accelerated rates of species

    extinctions now a days".

    Mention the four main causes of biodiversity losses or ‘ The Evil Quartet ’



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    Qn 26.

    Find out the consequences due to the loss of biodiversity in a region.

     



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    Qn 27.

    'Ecologists believed that communities with more species, generally, tend to be more stable than those with less species'. Identify the characteristic features of a stable community.



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    Qn 28.

    Explain the two different patterns of biodiversity.



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    Qn 29.

    Tropical Amazonian rainforest in South America has the greatest biodiversity on earth. Explain the reasons.

     



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