Which one of the following pairs of geographical areas show maximum biodiversity in our country?

(1) Sunderbans and Rann of Kutch

(2) Eastern Ghats and West Bengal

(3) Eastern Himalaya and Western Ghats

(4) Kerela and Punjab

Subtopic:  In Situ Conservation of Biodiversity |
 86%
From NCERT
AIIMS - 2005
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Genetic diversity in agricultural crops is threatened by

(1) introduction of high yielding varieties

(2) intensive use of fertilizers

(3) extensive intercropping

(4) intensive use of biopesticides.

Subtopic:  Introduction & Types |
AIIMS - 2005
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One of the ex situ conservation methods for endangered species is

(1)  wildlife sanctuaries

(2)  biosphere reserves

(3)  cryopreservation

(4)  national parks.

Subtopic:  Ex Situ Conservation of Biodiversity |
 84%
From NCERT
AIIMS - 2005
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Keystone species deserve protection because these

(1)  are capable of surviving in harsh envinmental conditions

(2)  indicate presence of certain mineral in the soil

(3)  have become rare due to over exploitation

(4)  play an important role in supporting other species.

Subtopic:  Importance of Biodiversity |
 76%
AIIMS - 2006
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In India, we find mangoes with different flavours, colours, fibre content, sugar content and even shelf-life. The large variation is on account of  

(1)  species diversity    

(2)  induced mutations    

(3)  genetic diversity    

(4)  hybridisation.

Subtopic:  Introduction & Types |
 72%
From NCERT
AIIMS - 2006
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Biosphere reserves differ from National Parks and Wildlife sanctuaries because in the former
(1) human beings are not allowed to enter

(2) people are an integral part of the system

(3) plants are paid greater attention than the animals

(4) living organisms are brought from all over the world and preserved for posterity

Subtopic:  In Situ Conservation of Biodiversity |
AIIMS - 2006
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Beta diversity is diversity

(1) in a community

(2) between communities

(3) in a mountain gradient

(4) on a plain

 79%
AIIMS - 2007
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Which part of the world has a high density of organism?

(1) Deciduous forests

(2) Grasslands

(3) Tropical rain forests

(4) Savannahs

Subtopic:  Biodiversity Patterns |
 95%
From NCERT
AIIMS - 2007
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What is a keystone species?

(1) A species which makes up only a small proportion of the total biomass of a community, yet has a huge impact on the community's organization and survival,

(2) A common species that has plenty of biomass, yet has a fairly low impact on the community's organization

(3) A rare species that has minimal impact on the biomass and on other species in the community.

(4) A dominant a large proportion of the biomass and which affects many other species.

Subtopic:  Importance of Biodiversity |
 75%
AIIMS - 2008
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Which of the following is best method of germplasm conservation ?

(1) Herbarium

(2) Botanical garden

(3) Seed bank

(4) Zoological park

Subtopic:  Ex Situ Conservation of Biodiversity |
 92%
From NCERT
AIIMS - 2011
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