Lspu-gsar-eco

50 Questions

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Ecology Quizzes & Trivia

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Questions and Answers
  • 1. 
    Intagible values of forests include sustaining environmental sustainability through regulation of nutrients and energy in the ecosystem. These intagible values are also known as ____.
    • A. 

      Economic Services

    • B. 

      Ecological Services

    • C. 

      Economic Products

    • D. 

      Ecological Products

  • 2. 
    Examine the picture. Which type of forest ecosystem does it represent?
    • A. 

      Boreal Forest

    • B. 

      Freshwater Swamp Forest

    • C. 

      Mangrove Forest

    • D. 

      Lowland Equitorial Forest

  • 3. 
    The use of muffler in motorcycles creates noise pollution. In which classification does it fall?
    • A. 

      Quantitative, Primary

    • B. 

      Quantitative, Secondary

    • C. 

      Qualitative, Primary

    • D. 

      Qualitative, Secondary

  • 4. 
    In the ocean, specific organisms are found in each depth. Which characteristic of community best describes this fact?
    • A. 

      Community diversity

    • B. 

      Community dominance

    • C. 

      Community fluctuation

    • D. 

      Community stratification

  • 5. 
    In sulfur cycle, which sulfur derivative is deposited in oceans through fallout?
    • A. 

      H2S

    • B. 

      SO2

    • C. 

      SO4

    • D. 

      S4

  • 6. 
    Select three anthropogenic disturbance among the list of ecological disturbance below. 
    • A. 

      Alien species

    • B. 

      Deforestation

    • C. 

      Floods

    • D. 

      Hurricanes

    • E. 

      Logging

    • F. 

      Pathogens

  • 7. 
    Which is NOT an ozone-depleting substance (ODS)?
    • A. 

      CFCL3

    • B. 

      HCFCs

    • C. 

      HFCs

    • D. 

      N2O

  • 8. 
    The following are characteristics of desert EXCEPT:
    • A. 

      Low productivity

    • B. 

      Low annual precipitation

    • C. 

      Plant growth occurs in wet and warm months

    • D. 

      Individual plants are widely spaced due to intense competition for water

  • 9. 
    Smoke is a primary pollutant.
    • A. 

      True

    • B. 

      False

  • 10. 
    The use of insecticide and pesticide contribute to soil pollution.
    • A. 

      True

    • B. 

      False

  • 11. 
    In the acronym TREES for forest conservation, the first E stands for Establish.
    • A. 

      True

    • B. 

      False

  • 12. 
    The following are problem areas of deforestation EXCEPT:
    • A. 

      Global warming

    • B. 

      Habitat loss

    • C. 

      Livestock ranching

    • D. 

      Loss of biomass

  • 13. 
    Which is the annual air quality guideline value for Total Suspended Particulates (TSP) according to DENR?
    • A. 

      85 microgram/Ncm

    • B. 

      90 microgram/Ncm

    • C. 

      120 microgram/Ncm

    • D. 

      135 microgram/Ncm

  • 14. 
    Which waste is considered uncontrolled?
    • A. 

      Commercial waste

    • B. 

      Mine waste

    • C. 

      Household wastes

    • D. 

      Municipal solids

  • 15. 
    Choose the five levels of waste management hierarchy in the list.
    • A. 

      Dispose

    • B. 

      Recover

    • C. 

      Restore

    • D. 

      Recycle

    • E. 

      Reuse

    • F. 

      Reduce

    • G. 

      Conserve

  • 16. 
    The land and water ecosystems that provide the resources that a person uses and that neutralize that person’s wastes is part of that person’s 
    • A. 

      Biodiversity

    • B. 

      Habitat

    • C. 

      Ecological footprint

    • D. 

      Ecological sustainability

  • 17. 
    Farmers can reduce soil erosion by ___.
    • A. 

      Contour plowing

    • B. 

      Grazing poultry or livestock

    • C. 

      Increasing irrigation

    • D. 

      Plowing up roots

  • 18. 
    Which of the following is a density-independent limiting factor?
    • A. 

      Disease

    • B. 

      Earthquake

    • C. 

      Emigration

    • D. 

      Parasitism

  • 19. 
    Which will reduce competition within a species’ population? 
    • A. 

      Fewer individuals

    • B. 

      Fewer resources

    • C. 

      Higher birthrate

    • D. 

      Higher population density

  • 20. 
    The various growth phases through which most populations go are represented on 
    • A. 

      Exponential growth curve

    • B. 

      Logistic growth curve

    • C. 

      Normal curve

    • D. 

      Population curve

  • 21. 
    An interaction in which an animal feeds on plants is called
    • A. 

      Carnivory

    • B. 

      Herbivory

    • C. 

      Predation

    • D. 

      Symbiosis

  • 22. 
    Each of the following is an abiotic factor in the environment EXCEPT
    • A. 

      Plant life

    • B. 

      Soil type

    • C. 

      Rainfall

    • D. 

      Temperature

  • 23. 
    The total amount of living tissue within a given trophic level is called the
    • A. 

      Biomass

    • B. 

      Energy mass

    • C. 

      Organic mass

    • D. 

      Tropic mass

  • 24. 
    The lowest level of environmental complexity that includes living and nonliving factors is the ___.
    • A. 

      Biosphere

    • B. 

      Biome

    • C. 

      Community

    • D. 

      Ecosystem

  • 25. 
    Freshwater ecosystems that often originate from underground sources in mountains or hills are __.
    • A. 

      Estuaries

    • B. 

      Lakes and ponds

    • C. 

      Rivers

    • D. 

      Wetlands

  • 26. 
    The portion of Earth in which all life exists is known as ____.
    • A. 

      Biotic community

    • B. 

      Biosphere

    • C. 

      Climax stage

    • D. 

      Ecosystem

  • 27. 
    Lichens are composed of two organisms, a fungus that cannot make its own food and algae that contain chlorophyll. Lichens may live on the bark of trees or even on bare rock. They secrete acids that tend to break up the rock they live on, helping to produce soil. As soil accumulates from the broken rock and dead lichens, other organisms, such as plants, may begin to grow. What is the role of the algae component of a lichen in an ecosystem?
    • A. 

      Decomposer

    • B. 

      Herbivore

    • C. 

      Predator

    • D. 

      Producer

  • 28. 
    Hunting, Commercial fishing methods and gathering are examples of ____.
    • A. 

      Population fragmentation

    • B. 

      Population stratification

    • C. 

      Overharvesting

    • D. 

      Overpopulation

  • 29. 
    A forester wants to know the diversity of organisms in a 1 sq.km. area. Which ecosystem diversity will s/he use?
    • A. 

      Alpha diversity

    • B. 

      Beta diversity

    • C. 

      Gamma diversity

    • D. 

      None of the above

  • 30. 
    Which of the following statements about the composition and properties of water pollutants is true?
    • A. 

      Algae blooms often occur when a limiting nutrient is provided.

    • B. 

      Any amount of animal wastes found in water is considered harmful.

    • C. 

      No microorganism can survive the chlorination of water for drinking.

    • D. 

      Natural organic chemicals tend to be more toxic than synthetic ones.

  • 31. 
    Which is the largest nonpoint source of water pollution?
    • A. 

      Agriculture

    • B. 

      Domestic

    • C. 

      Government

    • D. 

      Industry

  • 32. 
    What is the most common litter found along beaches?
    • A. 

      Aluminum

    • B. 

      Glass

    • C. 

      Paper

    • D. 

      Plastic

  • 33. 
    Which of the following about sewage treatment is true?
    • A. 

      Chlorination is part of the tertiary treatment of waste water.

    • B. 

      In most cities, primary treatment of waste water is sufficient.

    • C. 

      At present, sludge from waste-water treatment plants is used as soil conditioners.

    • D. 

      Nitrogen and phosphorus are often present in significant quantities after secondary treatment.

  • 34. 
    Which of the following statements about human carrying capacity is the most likely true?
    • A. 

      Human technology has been responsible for periodically increasing the carrying capacity.

    • B. 

      We have exceeded our carrying capacity as exemplified by world hunger.

    • C. 

      The earth can probably support 40-50 billion people on a vegetarian diet.

    • D. 

      In all likelihood, human do not have a carrying capacity.

  • 35. 
    Population control measures
    • A. 

      Are successful only if compulsory methods are employed.

    • B. 

      Have been instituted in China primarily on voluntary, incentive-based criteria.

    • C. 

      Have been fairly successful in India due to its early recognition of the problem.

    • D. 

      Have generally been unsuccessful in those countries with the highest populations.

  • 36. 
    The most common gas in the atmosphere is __.
    • A. 

      Carbon dioxide

    • B. 

      Hydrogen

    • C. 

      Nitrogen

    • D. 

      Oxygen

  • 37. 
    Which of the following are variable gases in the atmosphere?
    • A. 

      Oxygen, ozone, and water

    • B. 

      Ozone, carbon dioxide, and water

    • C. 

      Nitrogen, carbon dioxide, and ozone

    • D. 

      Oxygen, carbon dioxide, and nitrogen

  • 38. 
     Which of the following would be the most effective and cheapest way of reducing the incidence of acid rain?
    • A. 

      build electric cars

    • B. 

      Burn low sulfur coal

    • C. 

      build taller smoke stacks

    • D. 

      Install smoke stack scrubbers

  • 39. 
    The largest source of photochemical smog, especially in sunny climates like the Philippines, is
    • A. 

      Automobiles.

    • B. 

      Chemical plants.

    • C. 

      Electric power plants.

    • D. 

      trash burnings.

  • 40. 
    Identify the most harmful source of indoor combustion pollution.
    • A. 

      Cigarettes

    • B. 

      Fireplaces

    • C. 

      Propane heaters

    • D. 

      Wood stoves

  • 41. 
    Which species is more likely to NOT go extinct?
    • A. 

      Herbivores

    • B. 

      Island species

    • C. 

      Species with large territories

    • D. 

      Species with specialized habitats

  • 42. 
    Which of the following about biodiversity loss is true?
    • A. 

      The cause of most extinctions is fairly easy to determine.

    • B. 

      Due to intense interest, the extinction rate at present is declining.

    • C. 

      The only cause of coral reef destruction is overexploitation by fisheries.

    • D. 

      Many mass extinctions seem to have been caused by climatic disruption of habitat.

  • 43. 
    Which of the following statements about CFCs is true?
    • A. 

      CFCs can be removed from the atmosphere by rain.

    • B. 

      It is released chlorine from a CFC that destroys ozone.

    • C. 

      HCFCs are more harmful to the ozone layer than CFCs.

    • D. 

      CFCs are highly reactive compounds in the troposphere.

  • 44. 
    What is the primary way that humans are increasing CO2 concentrations in the atmosphere?
    • A. 

      deforestation

    • B. 

      Burning fossil fuels

    • C. 

      More people, more exhaling CO2

    • D. 

      Production of carbonated soft drinks

  • 45. 
    The primary drawback to using the sun directly as a power source is that its energy is
    • A. 

      Weak

    • B. 

      Dispersed

    • C. 

      Intermittent

    • D. 

      Unavailable

  • 46. 
    Which of the following statements is true about geothermal energy?
    • A. 

      Geothermal power is most practical along plate margins.

    • B. 

      Geothermal power is unique in that pollution is not a byproduct.

    • C. 

      Geothermal energy exploitation, like hydropower, has leveled off worldwide.

    • D. 

      The first commercial hot dry rock power station is in operation in Great Britain.

  • 47. 
    Which of the following statements about species diversity is true?
    • A. 

      Today we are experiencing a decrease in species diversity.

    • B. 

      Species diversity was greater during the age of dinosaurs than today.

    • C. 

      Species diversity decreased when oxygen levels on earth became too high.

    • D. 

      The development of eukaryotic organisms signaled the beginning of a mass extinction.

  • 48. 
    Which geological period did not see a mass extinction?
    • A. 

      Cambrian

    • B. 

      Devonian

    • C. 

      Silurian

    • D. 

      Triassic

  • 49. 
    What percent of the earth's water is fresh and accessible?
    • A. 

      0.6

    • B. 

      1.2

    • C. 

      10.5

    • D. 

      24

  • 50. 
    Which statement about groundwater is true?
    • A. 

      Loss of wetlands often means a loss of an aquifer's recharge zone.

    • B. 

      The aquifer in the Philippines has yet to be tapped by agriculture.

    • C. 

      Groundwater pollution is expected to pose little problem since groundwater exists in such vast quantities.

    • D. 

      Wastes can be safely disposed of into aquifer includes because they are confined, away from drinking water.