Human/ Population/ Water

The following are types of microorganisms that can be pathogenic in drinking water.

• A. Bacteria

• B.Protozoa

• C.Viruses

• D.A and C only

• E. all of the above

Which of the following is the primary source of freshwater in the Philippines?

• A.Lakes

• B. River

• C. Grandwater

• D. Rainfall

What is the main cause of water pollution in our country?

• A.Industrial waste

• B.Oil spills

• C. Agriculture run-off

• D. Domestic sewage

Eutrophication means

• A. Overfishing in rivers

• B.Excessive growth of algae in bodies of water

• D. Salinization of coastal areas

• C. Depletion of groundwater reserves

Main source of water pollution during typhoons and heavy rainfalls.

• A.Land

• B. Chemical spills

• C. Sewage overflow

• D. agricultural run-off

Main water pollutant from mining industry?

• A. Heavy metals

• B. Oil and grease

• C. Pesticides

• D. Sediments, silt, and sand

True about coliform bacteria

• A. Usually causes disease

• B. Respond to water treatment differently than do most pathogens

• C. Grow in the intestines of people and warm blooded animals

• D. Exist only in water that contains pathogens.

• E. All of the Above

Government agency responsible for the management and protection of water resources in the Philippines.

• A. DENR

• B. BFAR

• C. DA

• D. DOH

• E. DPWH

The major river system in the Philippines

• A.Pasig river

• B. Agusan river

• C. Cagayan river

• D. Pampanga river

Water quality indicator which measures the amount of dissolved oxygen consumed by microorganisms to decompose organic waste.

• A.Dissolved

• B. Biochemical Oxygen Demand, BOD

• C. pH

• D. Microbiological testing