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WorksheetsBiodiversity and Conservation
Total questions: 15
Worksheet time: 5mins
The genetic variation shown by Rauwolfia might be in terms of
A) Potency of Reserpine
B) Concentration of Reserpine
C) Fragrance of Reserpine
D) Both A and B
Deserts. rain forests. mangroves. coral reefs, wetlands,
estuaries and alpine meadows can be employed to describe
Genetic diversity
Species diversity
Ecological diversity
All of the above
About tbe total number of species present on earth, a
more conservative and scientifically sound estimate was
made by
Robert May
Robert Costanza
Alexander Von Humboldt
Both A and B
Among animals, the most species rich taxonomic group
is
Fungi
Vertebrates
Invertebrates
Crustacean
Biologists are not sure about how many prokaryotic
species there might be. The problem is that
Conventional taxonomic methods are not suitable
for identifying microbial species
Many prokaryotic species are simply not culturable
under laboratory conditions
Microbes are too small so not easily visible under
the microscopes
None of the above
If we accept May's global estimates. then the total
species that have been recorded so far are about
70%
22%
68%
8.1%
The pattern of biodiversity is affected by
A) Latitudinal gradients
B) Species-area relationships
C) Both A and B
D) None of the above
Speciation is generally a function of
Area
Volume
Time
None of the above
The species-area relationship on a logarithmic scale (log
scale) is
Rectangular parabola
Rectangular hyperbola
Straight line/linear
Sigmoid
David Tilman's long-term ecosystem experiments
using outdoor plots showed that
lncreased diversity contributed to lower productivity
lncreased diversity contributed to higher productivity
lncreased diversity has no impact on productivity
lncreased diversity has unpredictable impact on productivity
During the long period ( > 3 billion years) since the
origin and diversification of life on earth there are
how many episodes of mass extinction of species?
4
5
6
7
The alien species (Nile perch) were introduced into Lake Victoria led to a decline in the population of native (a) fishes
Which of the following is referred as "Evil Quartet" with
reference to loss of biodiversity?
Species richness. extinctions. deforestation, erosion
Habitat loss and fragmentation, over-exploitation,
alien species invasion, co-extinction
Overexploitation. grazing, decomposition. extinction
Habitat destruction. co-extinction. deforestation.
species richness
Which is referred to as Lungs of the Planet Earth'?
Western ghat
Lake Victoria
Greenland
Amazon Rain forest
Term Biodiversity was popularized by
Paul Ehlrich
David Tilman
Edward Wilson
Robert May
