LSPU-GSAR-ECO

1. The use of insecticide and pesticide contribute to soil pollution.

True

False

2. The following are problem areas of deforestation EXCEPT:

Global warming

Habitat loss

Livestock ranching

Loss of biomass

3. Which of the following about biodiversity loss is true?

The cause of most extinctions is fairly easy to determine.

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

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

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

4. What is the primary way that humans are increasing CO₂ concentrations in the atmosphere?

Deforestation

Burning fossil fuels

More people, more exhaling CO2

Production of carbonated soft drinks

5. Which is the largest nonpoint source of water pollution?

Agriculture

Domestic

Government

Industry

6. The total amount of living tissue within a given trophic level is called the

Biomass

Energy mass

Organic mass

Tropic mass

7. The portion of Earth in which all life exists is known as ____.

Biotic community

Biosphere

Climax stage

Ecosystem

8. Which of the following statements about human carrying capacity is the most likely true?

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

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

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

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

9. Which of the following statements about species diversity is true?

Today we are experiencing a decrease in species diversity.

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

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

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

10. Population control measures

Are successful only if compulsory methods are employed.

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

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

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

11. The most common gas in the atmosphere is __.

Carbon dioxide

Hydrogen

Nitrogen

Oxygen

12. Which statement about groundwater is true?

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

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

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

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

13. What is the most common litter found along beaches?

Aluminum

Glass

Paper

Plastic

14. Hunting, Commercial fishing methods and gathering are examples of ____.

Population fragmentation

Population stratification

Overharvesting

Overpopulation

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

Economic Services

Ecological Services

Economic Products

Ecological Products

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

85 microgram/Ncm

90 microgram/Ncm

120 microgram/Ncm

135 microgram/Ncm

17. Which waste is considered uncontrolled?

Commercial waste

Mine waste

Household wastes

Municipal solids

18. 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

Biodiversity

Habitat

Ecological footprint

Ecological sustainability

19. Farmers can reduce soil erosion by ___.

Contour plowing

Grazing poultry or livestock

Increasing irrigation

Plowing up roots

20. Which of the following is a density-independent limiting factor?

Disease

Earthquake

Emigration

Parasitism

21. Which will reduce competition within a species' population?

Fewer individuals

Fewer resources

Higher birthrate

Higher population density

22. An interaction in which an animal feeds on plants is called

Carnivory

Herbivory

Predation

Symbiosis

23. Each of the following is an abiotic factor in the environment EXCEPT

Plant life

Soil type

Rainfall

Temperature

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

Community diversity

Community dominance

Community fluctuation

Community stratification

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

Biosphere

Biome

Community

Ecosystem

26. 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?

Decomposer

Herbivore

Predator

Producer

27. Select three anthropogenic disturbance among the list of ecological disturbance below.

Alien species

Deforestation

Floods

Hurricanes

Logging

Pathogens

Submit

28. The following are characteristics of desert EXCEPT:

Low productivity

Low annual precipitation

Plant growth occurs in wet and warm months

Individual plants are widely spaced due to intense competition for water

29. In the acronym TREES for forest conservation, the first E stands for Establish.

True

False

30. Examine the picture. Which type of forest ecosystem does it represent?

Boreal Forest

Freshwater Swamp Forest

Mangrove Forest

Lowland Equitorial Forest

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

Automobiles.

Chemical plants.

Electric power plants.

Trash burnings.

32. Identify the most harmful source of indoor combustion pollution.

Cigarettes

Fireplaces

Propane heaters

Wood stoves

33. Which species is more likely to NOT go extinct?

Herbivores

Island species

Species with large territories

Species with specialized habitats

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

Alpha diversity

Beta diversity

Gamma diversity

None of the above

35. Which of the following statements about CFCs is true?

CFCs can be removed from the atmosphere by rain.

It is released chlorine from a CFC that destroys ozone.

HCFCs are more harmful to the ozone layer than CFCs.

CFCs are highly reactive compounds in the troposphere.

36. Which of the following about sewage treatment is true?

Chlorination is part of the tertiary treatment of waste water.

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

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

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

37. Choose the five levels of waste management hierarchy in the list.

Dispose

Recover

Restore

Recycle

Reuse

Reduce

Conserve

Submit

38. Which of the following statements about the composition and properties of water pollutants is true?

Algae blooms often occur when a limiting nutrient is provided.

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

No microorganism can survive the chlorination of water for drinking.

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

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

Weak

Dispersed

Intermittent

Unavailable

40. Which of the following statements is true about geothermal energy?

Geothermal power is most practical along plate margins.

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

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

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

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

Quantitative, Primary

Quantitative, Secondary

Qualitative, Primary

Qualitative, Secondary

42. The various growth phases through which most populations go are represented on

Exponential growth curve

Logistic growth curve

Normal curve

Population curve

43. Freshwater ecosystems that often originate from underground sources in mountains or hills are __.

Estuaries

Lakes and ponds

Rivers

Wetlands

44. Which geological period did not see a mass extinction?

Cambrian

Devonian

Silurian

Triassic

45. In sulfur cycle, which sulfur derivative is deposited in oceans through fallout?

H2S

SO2

SO4

S4

46. What percent of the earth's water is fresh and accessible?

0.6

1.2

10.5

24

47. Which is NOT an ozone-depleting substance (ODS)?

CFCL3

HCFCs

HFCs

N2O

48. Which of the following are variable gases in the atmosphere?

Oxygen, ozone, and water

Ozone, carbon dioxide, and water

Nitrogen, carbon dioxide, and ozone

Oxygen, carbon dioxide, and nitrogen

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

Build electric cars

Burn low sulfur coal

Build taller smoke stacks

Install smoke stack scrubbers

50. Smoke is a primary pollutant.

True

False

Lspu-gsar-eco

1. The use of insecticide and pesticide contribute to soil pollution.

2.

What first name or nickname would you like us to use?

2. The following are problem areas of deforestation EXCEPT:

3. Which of the following about biodiversity loss is true?

4. What is the primary way that humans are increasing CO2 concentrations in the atmosphere?

5. Which is the largest nonpoint source of water pollution?

6. The total amount of living tissue within a given trophic level is called the

7. The portion of Earth in which all life exists is known as ____.

8. Which of the following statements about human carrying capacity is the most likely true?

9. Which of the following statements about species diversity is true?

10. Population control measures

11. The most common gas in the atmosphere is __.

12. Which statement about groundwater is true?

13. What is the most common litter found along beaches?

14. Hunting, Commercial fishing methods and gathering are examples of ____.

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

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

17. Which waste is considered uncontrolled?

18. 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

19. Farmers can reduce soil erosion by ___.

20. Which of the following is a density-independent limiting factor?

21. Which will reduce competition within a species' population?

22. An interaction in which an animal feeds on plants is called

23. Each of the following is an abiotic factor in the environment EXCEPT

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

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

27. Select three anthropogenic disturbance among the list of ecological disturbance below.

28. The following are characteristics of desert EXCEPT:

29. In the acronym TREES for forest conservation, the first E stands for Establish.

30. Examine the picture. Which type of forest ecosystem does it represent?

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

32. Identify the most harmful source of indoor combustion pollution.

33. Which species is more likely to NOT go extinct?

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

35. Which of the following statements about CFCs is true?

36. Which of the following about sewage treatment is true?

37. Choose the five levels of waste management hierarchy in the list.

38. Which of the following statements about the composition and properties of water pollutants is true?

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

40. Which of the following statements is true about geothermal energy?

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

42. The various growth phases through which most populations go are represented on

43. Freshwater ecosystems that often originate from underground sources in mountains or hills are __.

44. Which geological period did not see a mass extinction?

45. In sulfur cycle, which sulfur derivative is deposited in oceans through fallout?

46. What percent of the earth's water is fresh and accessible?

47. Which is NOT an ozone-depleting substance (ODS)?

48. Which of the following are variable gases in the atmosphere?

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

50. Smoke is a primary pollutant.

4. What is the primary way that humans are increasing CO₂ concentrations in the atmosphere?