India is one of the twelve megadiversity countries with ______ of genetic resources of the world.

  • 12.1%

  • 18.1%

  • 38.1%

  • 8.1%

Which of the following is not an invasive species?

  • Parthenium hysterophorus

  • Nelumbo (lotus)

  • Lantana camara

  • Eichhornia crassipes

The total number of biodiversity hotspots in the world are

  • 72           

  • 34             

  • 52           

  • 24.

One out of the following is not responsible for biodiversity loss.

  • Alien species invasion

  • Co-extinction

  • Ex-situ conservation

  • Deforestation

Refer the following figure represent global biodiversity. Identify A-E and choose the correct option.

 ABCDE
(1)BirdsReptilesAlgaeMolluscsMosses
(2)MammalsBirdsLichensMolluscsMosses
(3)BirdsAmphibiansMossesInsectsAlgae
(4)BirdsReptilesAlgaeInsectsMosses
  • 1
  • 2
  • 3
  • 4

Select the correct statement about biodiversity.

  • The desert area of Rajasthan and Gujarat have a very high level of desert animals.

  • Large scale planting of Bt cotton has no adverse effect on biodiversity

  • Western Ghats have a very high degree of species richness and endemism

  • Conservation of biodiversity is just a fad pursued by the developed countries.

The species diversity decreases from lower to higher altitudes on a mountain. This is due to

  • increase in temperature

  • decrease in temperature

  • greater seasonal variability

  • Both (b) and (c)

Different varieties of Indian mangoes are most popular in Western and some other European countries. The varieties with different flavour, colour, sugar and fleshy content is due to

  • genetic diversity

  • species diversity

  • induced mutation

  • hybridisation

IUCN stands for

 

  • Indian Union for Conservation of Nature

  • International Union for Conservation of Nature

  • Indian Union for Chemical Nomenclature

  • International Union for Conservation of Nutrients

For better survival of human Indian population, which is the most important Step?

  • Afforestation

  • Reduction in population density

  • conservation of wild life including tribals

  • Both (a) and (c)

Which of the following rain forest is home to more than 40,000 species of plants, 3,000 of fishes, 1,300 of birds, 427 of mammals, 427 of amphibians, 378 of reptiles and more than 1,25,000 invertebrates?

  • Amazonian

  • Tropical

  • Arctic tundra

  • Temperate

The term "The Evil Quartet" is related with:

  • Four major causes of forest loss   

  • Four major causes of population explosion

  • Four major causes of air pollution 

  • Four major causes of biodiversity losses

Given below are pie diagrams A, B and C related to proportionate number of species of major taxa of invertebrates, vertebrates and plants respectively. Critically study and fill in the blanks I, II, III and IV:

  • I - Molluscs, II - Amphibians, III - Fungi, IV - Angiosperms

  • I - Molluscs, II - Amphibians, III - Angiosperms, IV - Fungi

  • I - Hexapoda, II - Amphibians, III - Fungi, IV - Angiosperms

  • I - Turtles, II - Amphibians, III - Fungi, IV - Angiosperms

If log A = 4, z = 0.3 and log c = 0.8, what is log S?

  • 3.76               

  • 100                

  • 4.24               

  • 2

Conservation hotspots are best described as:

  • Areas with large numbers of endemic species that are disappearing rapidly

  • Areas where people are particularly active supporters of biological diversity

  • Islands that are experiencing high rates of extinction

  • Areas where native species are being replaced with introduced species

A keystone species is one that:

  • Has a higher likelihood of extinction than a non keystone species

  • Exerts a strong influence on an ecosystem

  • Causes other species to become extinct

  • Has a weak influence on an ecosystem

One of the following statements is incorrect with reference to biodiversity. Identify it:

  • The richest reservoirs of animal and plant life (high species richness) with few or no threatened species are called 'biodiversity hotspots’

  • Biodiversity increases from higher altitudes to lower altitudes

  • Biodiversity decreases from the equator to polar regions

  • Depletion in genetic diversity of crop plants is mainly due to the introduction of better varieties with high yield, disease resistance, etc.

In situ strategies include-

A. Biosphere reserve

B. National park

Wildlife sanctuaries

D. Sacred forests / lakes

  • A, B

  • A, B, C

  • B, C, D

  • A, B, C, D

Which of the two groups have the same diversity in Amazonian Rain forest?

  • Amphibians and Mammals

  • Amphibians and reptiles

  • Reptiles and mammals

  • Reptiles and Birds

Ex situ strategies include:
A. Botanical garden
B. Zoos
C. Seed / Pollen banks   
D. Gene bank and tissue culture

  • A, B                

  • A, B, C            

  • B, C, D            

  • A, B, C, D

According to the concept of species area relations:

  • The number of species in an area increases with the size of the area

  • Larger species require larger habitat areas than do smaller species

  • Most species within any given area are endemic

  • The larger the area, the greater the extinction rate

The exotic species, introduced in India for its flower and leaf is:

  • Lantana                                       

  • Water Hyacinth (Eicchornia)
  • Parthenium                                  
  • All are correct

Column-I                                          Column-II

I. Silent valley                           A.     Kaziranga

II. Rhinoceros                           B.     Bandipur

III. Tiger project in Karnataka   C.     In situ

IV. National Park                       D.    Tropical evergreen forest

  • I - B, II - A, III - D, IV - C            

  • I - D, II - A, III - B, IV - C

  • I - A, II - C, III - B, IV - D             

  • I - B, II - A, III - C, IV - D

Which one the following is false about Habitat loss and fragmentation?

  • This is the most important cause driving animals and plants to extinction

  • The most dramatic examples of habitat loss come from temperate rainforests

  • Once covering more than 14% of the earth's land surface, rain forests now cover no more than 6 percent.

  • The Amazon rainforest harbouring probably millions of species is being cut and cleared for cultivating soya beans or for conversion to grassland for raising beef cattle

Global species diversity and land area covered by India with respect to world is:

  • 12%, 7%        

  • 2.4%, 9%       

  • 8.1%, 2.4%    

  • 4%, 3%

The great German naturalist and geographer Alexander von Humboldt observed that within a region species richness increased with increasing explored area, but only up to a limit. In fact, relation between species richness and area for a wide variety of taxa (angiosperm plants, birds, bats, freshwater fishes) turns out to be a rectangular hyperbola. Now find out correct equations shown in the graph:

  • I - S = CAZ; II - Log S = log C + Z log A

  • I - Log S = log C + Z log A; II - S = CAZ

  • I - S = CAZ + log C; II - Log S = log C + Z log A

  • I - S = CAZ + log A; II - Log S = log C + Z log A

Given below are three statements (A-E) each with one or two blanks. Select the option which correctly fills up the blanks.
Statements:
A. The tropics (between _____I_____) harbour more species than temperate and polar regions.
B. For example, Columbia situated near _____II_____, has about 1400 species of birds, while New York (41°N) has 105 species, Greenland (71°N) has about 56 species and India (in the equator region) has _____III_____ species.
C. The number of species of vascular plants in tropics is about _____IV_____ times more of that of temperate forests.
D. The _____V_____ rain forest in Brazil, South America has the greatest biodiversity on earth.
E. Since the origin of life on earth and evolution, there have been five episodes of mass extinction, but the current rate of extinction (6 mass extinction - due to human activities) is _____VI_____ times faster than them, due to human activities:
Options:

  • I - 0°N to 90°S, II - equator, III - 1200, IV - five, V - Amazonian, VI - 100 - 1000

  • I - 23.5°N to 23.5°S, II - equator, III - 10000, IV - ten, V - Amazonian, VI - 100 - 1000

  • I - 23.5°N to 23.5°S, II - equator, III - 1200, IV - ten, V - Amazonian, VI - 100 -1000

  • I - 23.5°N to 23.5°S, II - equator, III - 1200, IV - ten, V - Amazonian, VI - 100 - 10000

A species facing extremely high risk of extinction in the immediate future is called:

  • Vulnerable                                   

  • Endemic

  • Critically Endangered                     

  • Extinct

Diversity can be understood by which of the following terminology?

  • Heterogeneity

  • Homogeneity

  • Homozygosity

  • Heterotrophic

Biodiversity, this term

  • Was given by Edward Wilson

  • Was popularized by Edward Wilson

  • Was given by Paul Ehrlich

  • Was popularized by Paul Ehrlich

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