Biodiversity And Conservation

Biology
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Select the incorrect statement.

A
Species diversity increases as we move away from the equator towards the poles.
B
Stellars sea cow and passenger pigeon got extinct due to over exploitation by man.
C
Lantana and Eichhornia are invasive weed species in India.
D
The historic convention on biological diversity was held in 1992.
E
Among animals, insects are the most species-rich taxonomic group.
Medium
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The greatest threat to genetic diversity in agricultural crops is

A
Extensive use of insecticides and pesticides
B
Extensive mixed cropping
C
Introduction of high yielding varieties
D
Extensive use of fertilisers
Medium
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Virus-free clones are obtained from

A
Callus
B
Embryoids
C
Haploid culture
D
Shoot tip culture
Medium
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The genome of an extinct species can be preserved in

A
Gene Bank
B
National park
C
Herbarium
D
None of the above
Medium
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Genetic erosion is due to

A
Deforestation
B
Shifting cultivation
C
Adoption of genetically uniform varieties
D
All of the above
Medium
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Wild varieties of plants must be conserved to

A
Destroy ecosystem
B
Feeding wild animals
C
Future evolution
D
Incorporate useful traits in future crop varieties
Medium
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Maximum genetic diversity of crop plants occurs where agriculture is

A
Run on commercial lines
B
Advanced
C
Rainfed
D
Primitive
Medium
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Ex situ conservation is carried out through

A
Funneling the threatened species into trade
B
Off-site collections
C
Gene banks
D
All of the above
Medium
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A place where genetic material of endangered plant is kept is 

A
Gene library
B
Gene bank
C
Gene pool
D
Herbarium
Medium
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Germplasm is present in

A
Somatic cells
B
Growing points
C
Reproductive cells
D
Both (a) and (c)
Medium
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