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Biotechnology - 18

1-	Which of the following constituent/(s) is/are added to help in speedy generation of meristem culture in case of Ipomoea batatas improvement?
	A -	Auxins
	B -	Cytokinins
	C -	Both (a) and (b)
	D -	Adenine
2-	cDNA clone prepared to stigma mRNA of Brassica oleracea can be used as a probe on DNA digests of segregating populations to recognize
	A -	Aegilops
	B -	Triticum
	C -	Both (a) and (b)
	D -	S alleles
3-	Which of the following microorganisms leach metals out of rock ores and can accumulate silver?
	A -	Pseudomonas aeruginosa
	B -	Thiobacillus
	C -	Pseudomonas putida
	D -	Zoogloea ramigera
4-	Inundation involves use of a/an
	A -	large number of organisms over a short time to suppress/destroy a population
	B -	organism over a short time to suppress/destroy a population
	C -	large number of organisms over a long time to suppress/destroy a population
	D -	organism over a long time to suppress/destroy a population
5-	Milbemycin is known to exhibit a broad spectrum of activity against
	A -	agricultural pests
	B -	agricultural herbs
	C -	agricultural insects
	D -	All of these
6-	The rate of degradation and microbes resistance to toxic pollutants remain better when the
	A -	mixed cell population is used
	B -	individual cell is used
	C -	mixed cell population along with metals is used
	D -	individual cell along with metal is used
7-	Which of the bacteria is considered for biological leaching?
	A -	T. thiooxidans
	B -	T. ferrooxidans
	C -	Ferrobacillus terrooxidans
	D -	All of these
8-	The heavily polluted zone of water reservoir is known as
	A -	pleosaprophytic zone
	B -	mesosaprophytic zone
	C -	oligosaprophytic zone
	D -	None of these
9-	Streptomyces griseochromogenes is reported to show a potent curative effect against
	A -	rice blast disease
	B -	yellow blight of maize
	C -	milo of soybean
	D -	eye spot of sugarcane
10-	Which of the following is selectively effective against dicot weeds?
	A -	Cycloheximide
	B -	Anisomycin
	C -	Herbicidin A and B
	D -	Bialaphos

[Người đăng: Thành Lãm - ST]

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