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Environmental Protectio

Environmental Protectio
The heavily polluted zone of water reservoir is known as

oligosaprophytic zone
mesosaprophytic zone
pleosaprophytic zone
none of these

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Environmental Protectio
Which of the following is known to control Colorado potato beetle?

Verticillium lecauii
Beaveria bassiana
Metarhizium anisopliae
Nomuraea rileyi

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Environmental Protectio
Streptomyces griseochromogenes is reported to show a potent curative effect against

yellow blight of maize
rice blast disease
milo of soybean
eye spot of sugarcane

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Environmental Protectio
Which of the following is selectively effective against dicot weeds?

Herbicidin A and B
Bialaphos
Cycloheximide
Anisomycin

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Environmental Protectio
Which of the following have been used to oxidize ammonia and to prevent algal growth?

Both (a) and (b)
Micrococcus denitrificans cells encapsulated in liquid membranes
growth of hypomicrobium in presence of added methanol
Nitrosomonas europaen

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Environmental Protectio
The rate of degradation and microbes resistance to toxic pollutants remain better when the

mixed cell population along with metals is used
mixed cell population is used
individual cell along with metal is used
individual cell is used

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