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WorksheetsEnvMicro_Quiz1
Total questions: 10
Worksheet time: 5mins
Microbial communities in the Winogradsky’s column excludes:
Sulfur bacteria
Photosynthetic bacteria
Cyanobacteria
Filamentous fungi
Soil solutes rarely contain:
Nitrogen-based fertilizer
Hydrocarbon
Organic solutes
Inorganic solutes
The following are abiotic soil factors except:
Allelopathic substances
Nutrients
Moisture
pH
Suppressive soil :
Favours pathogen growth
Reduces disease incidence
Requires heavy metal
Is suitable for all crops
Microbes in soil are:
Primarily planktonic
More when deeper in soil
Competing with one another
Mostly anaerobes
In soil, bacteria have:
Highest biomass
Most tolerance to dessication
All are culturable
Highest numbers
The bacteria that fluorescence under UV light on King’s B Medium are:
Arthrobacter
Bacillus
Pseudomonas
Clostridium
Mature crusts in the desert have:
Cyanobacteria
Lichens
Mosses
All
Hydrothermal vents:
Is easily accessible for research
Have pH more than 9
Have colourful crustaceans
Are home to tubeworms
Challenges in studying microbes from sub-surface environments:
Grow too rapidly
Demands nutrient-rich media
Contaminated by surface microbes
Easily culturable
