WorksheetsBiodiversity and Conservation
Total questions: 15
Worksheet time: 8mins
According to Robert May, the global species diversity is about
50 million
7 million
1.5 million
20 million
Which of the following is not an example of in situ biodiversity conservation?
Biosphere reserves
National parks
Wildlife sanctuaries
Botanical gardens
Which of the following is not a cause for loss of biodiversity?
Destruction of habitat
Invasion by alien species
Setting up of zoological parks
Over-exploitation of natural resources
Species diversity ______ as one moves from equator to pole.
Increases
Decreases
first increases then decreases
first decreases then increases
The extinction of passenger pigeon was due to
increased number of predatory birds
over exploitation by humans
non-availability of the food
deforestation
Which of the following statements is correct?
Parthenium is an endemic species of our country.
African catfish is not a threat to indigenous catfishes.
Steller’s sea cow is an extinct animal.
Lantana is popularly known as carrot grass
Which of the following is characterised by presence of less seasonal variations?
Tropics
Temperate
Coniferous forests
Deserts
Rivet popper hypothesis was given by
Paul Ehrlich
Alexander von Humboldt
David Tilman
Charles Darwin
Read the following statements and select the correct answers.
Statement I: Out of every 10 animals on this planet, 7 are insects.
Statements II: The number of fungi species in the world is more than the combined total of the species of fishes, amphibians, reptiles and mammals.
Only statement I is incorrect
Only statement II is incorrect
Both the statements are incorrect
Both the statements are correct
Tropical area has all the following characteristics, except
More solar radiation available
More constant and predictable environment
Undergone frequent glaciations in the past
Having greater species diversity
If a person proceeds from high latitude to low latitude, then he will observe
Increase in species diversity
Increase in number of producers but decrease in consumers
Decrease in species diversity
No change in species diversity
Study the given populations and choose the option with maximum diversity in relation to species diversity.
Population A
Population B
Population C
Population B and C
According to May's global estimates how many species of plants and animals, respectively, are yet to be discovered and described from India?
50,000 and 90,000
3,00,000 and 90,000
3,00,000 and 1,00,000
1,00,000 and 3,00,000
Loss of biodiversity in a region may lead to all, except
Decline in plant productivity
Reduced resistance to environmental disturbances
Variability of ecosystem processes
Increase in resistance to invasions by alien species
India constitutes ______percent of the world’s land area and contributes _____ percent of the global species diversity.
1.0, 5.5
5.5, 1.0
8.1, 2.4
2.4, 8.1
