MICROBES IN AQUATIC ENVIRONMENT QUIZ

Hyphomycete fungi

produce nonmotile tetaradiate conidia

both (a) and (b)

None of these

grow in leaves and the infected leaves are the preferred food source for some aquatic insects

TRUE ANSWER : ?
YOUR ANSWER : ?

All of the following species are considered coliforms except

Escherichia coli

Salmonella typhi

Enterobacter aerogenes

Klebsiella pneumoniae

TRUE ANSWER : ?
YOUR ANSWER : ?

Activated sludge undergoes

Primary treatment

any of these

Secondary treatment

Tertiary treatment

TRUE ANSWER : ?
YOUR ANSWER : ?

Trickling filter comes under

none of these

primary treatment

secondary treatment

tertiary treatment

TRUE ANSWER : ?
YOUR ANSWER : ?

The Redfield ratio is an index of concentration of

nitrogen, potassium and iron

carbon, phosphorous and sulfur

carbon, nitrogen and phosphorous

carbon, hydrogen and oxygen

TRUE ANSWER : ?
YOUR ANSWER : ?

is an environment like where microorganisms are functioning in an extremely thin film of water and where oxygen-containing air is close to them.

low oxygen diffusion environment; soils

high oxygen diffusion environment; soils

low oxygen diffusion environment; lakes

high oxygen diffusion environment; lakes

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following species in water reveal the presence of fecal pollution of human or animal origin?

E.coli

Fecal Streptococci

Clostridium perfringens

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Metabolism of dissolved organic material released by phytoplankton allows heterotrophic bacteria to become part of the particulate organic matter that is passed up the food web to be metabolized and released as mineral elements and CO2 at each transfer. This sentence describes the

Redfield ratio

Gibbs free energy

microbial loop

Winogradsky column

TRUE ANSWER : ?
YOUR ANSWER : ?

The rate of flux of oxygen in air is __________ to/than the rate of flux of oxygen in water.

lesser

approximately equal

half

greater

TRUE ANSWER : ?
YOUR ANSWER : ?

Removal of solids is generally considered as a

Primary treatment

Tertiary treatment

None of these

Secondary treatment

TRUE ANSWER : ?
YOUR ANSWER : ?

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