Environment and Ecology | Ecology
Environment and Ecology | Ecology
1. Which of the following is not true about the ecosystem?
It represents all living organisms and physical environment in any given space-time unit
It is a functional unit
It has own productivity
It is a closed system
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2. Which one of the following is the best description of the term 'ecosystem"?
A community of organisms interacting with one another
That part of the Earth which is inhabited by living organisms
A community of organisms together with the environment in which they live
Flora and fauna of a geographical area
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3. Ecology' is the study of relationship between
Organism and environment
Man and forest
Soil and water
Husband and wife
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4. The term Ecosystem was proposed by
G. Tailor
E. Hartigan
D.R. Stoddart
Tansley
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5. Which of the following is an artificial ecosystem?
Ponds
Field
Forest
None of these
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6. Which of the following is an artificial ecosystem?
Rice field
Forest
Grassland
Lake
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7. The number of organisms that can be supported by the environment in a given area is known as
Population
Carrying Capacity
Pyramid of number or biomass
None of the above
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8. Which one of the following terms describes not only the physical space occupied by an organism, but also its functional role in the community of organisms?
Ecotone
Ecological niche
Habitat
Home range
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9. Which one of the following ecosystems covers the largest area of the earth's surface?
Desert Ecosystem
Grassland Ecosystem
Mountain Ecosystem
Marine Ecosystem
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10. Which one of the following is the largest ecosystem of the world?
Ocean
Grassland
Forest
Mountains
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11. Which of the following does not help to maintain ecological balance?
Cutting forest
Afforestation
Rainwater Management
Biosphere Reserves
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12. Which one of the following is one of the main causes of ecological imbalance in India?
Deforestation
Desertification
Floods and Famines
Rainfall variations
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13. Which of the following is an act that disturbs the ecological balance?
Lumbering
Social forestry
Vanamahotsav
Afforestation
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14. The highest trophic level in an ecosystem is obtained by
Herbivores
Carnivores
Omnivores
Decomposers
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15. Which of the following is not a biotic component of an ecosystem?
Air
Plant
Bacteria
Animals
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16. The primary source of energy in Eco-body is
Energy emitted by fermentation
Preserved vegetable sugar
Solar energy
None of the above
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17. In a food chain, man is
producer
only primary consumer
only secondary consumer
primary as well as secondary consumer
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18. 10% law is related with
transfer of energy as food from one tropic level to other
transfer of heat from one matter to another
transfer of birds from one zone to another
transfer of water from one zone to another
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19. In the marine environment, the main primary producers are
Phytoplanktons
Seaweeds
Marine angiosperms
Aquatic bryophytes
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20. Among the biotic components of the ecosystem, the producer system is
cow
peacock
tiger
green plants
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21. Trophic level I includes
Herbivorous animals
Carnivorous animals
Omnivorous animals
Green plants
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22. Which of the following constitute a food chain?
Grass, wheat and mango
Grass, goat and human
Goat, cow and elephant
Grass, fish and goat
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23. Biomass Pyramid is reversed in which type of ecosystem?
Forest
Pond
Grassland
Drylands
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24. Which one of the following organisms is likely to show the highest concentration of DDT, once it has been introduced into the ecosystem?
Grasshopper
Toad
Snake
Cattle
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25. Which one of the following trees is not Eco-friendly?
Babul
Eucalyptus
Neem
Pipal
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26. Which one of the following trees is considered to be an environmental hazard?
Babul
Amaltas
Neem
Eucalyptus
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27. The example of Lentic Habitat in the freshwater community is
Ponds and swamps
Waterfalls and rivers
Ponds and rivers
All of the above
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28. The transitional zone between two distinct communities is known as
Ecotype
Arcade
Ecosphere
Ecotone
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29. Which of the following is the most stable ecosystem?
Desert
Mountain
Ocean
Forest
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30. The cycling of elements in an ecosystem is called
Chemical cycles
Biogeochemical cycles
Geological cycles
Geochemical cycles
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31. Which one of the following is not related with ecological balance?
Water management
Afforestation
Industrial management
Wildlife protection
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32. Ecology is permanent economy' is the slogan of which movement?
Appiko Movement
Narmada Bachao Andolan
Chipko Movement
None of the above
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33. Chipko movement is related to
Plant conservation
Tiger project
Crocodile conservation
Plant reproduction
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34. The measurement unit of the ecological footprint is
Global hectares
Nanometer
Hoppus cubic foot
Cubic ton
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35. The minimum area of the land required to completely sustain the life of the person is called his
Biota
Ecological footprint
Biome
Niche
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36. Who of the following used the term 'deep ecology' for the first time?
E.P. Odum
C. Raunkiaer
F.E. Clements
Arne Naess
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37. The concept of ecological niche was enunciated by
Grinnell
Darwin
E.P. Odum
C.C. Park
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38. The Millennium Ecosystem Assessment describes the following ecosystem major categories of services-provisioning, supporting, regulating, preserving and cultural. Which one of the following is supporting service?
Production of food and water
Control of climate and disease
Nutrient cycling and crop pollination
Maintenance of diversity
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39. Which of the following shows density gradient of water system?
Ecocline
Halocline
Pycnocline
Thermocline
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40. In the grassland, trees do not replace the grasses as a part of an ecological succession because of
Insects and fungi
Limited sunlight and paucity of nutrients
Water limits and fire
None of the above
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41. Which one of the following is the correct order of biological organisation ranging from organism to biosphere?
Population, Ecosystem, Community, Landscape
Landscape, Community, Ecosystem, Population
Population, Community, Ecosystem, Landscape
Population, Landscape, Community, Ecosystem
