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Biotechnology - 51

1-	Which of the following gene is transferred to plants that detoxify the herbicide atrazine?
	A -	Nitrilase
	B -	Glutathione S-transferase (GST)
	C -	Phosphinothrium acetyl transferase
	D -	All of these
2-	Which of the following self-pollinating plant/(s) tend to be homozygous?
	A -	Peas
	B -	Tomato
	C -	Peach
	D -	All of these
3-	Which cell-based plant technology involves the combining of two cells without cell walls from different species?
	A -	Clonal propagation
	B -	Cybridization
	C -	Protoplast fusion
	D -	Mutant selection
4-	A naturally occurring variant, possessing characteristics of interest, is identified. This plant is selectively bred. This is an example of
	A -	traditional plant breeding
	B -	transgenic technology
	C -	mutant selection
	D -	None of these
5-	Which of the following dies from Ti plasmid infection?
	A -	Rice
	B -	Corn
	C -	Sorghum
	D -	All of these
6-	Which of the following genes can be used for making resistances against viral infection?
	A -	Genes for capsid protein
	B -	Gene for nucleocapsid protein
	C -	Satellite RNA
	D -	All of these
7-	Which of the following has been widely used to provide resistance against plant viruses?
	A -	Virus resistance genes from bacteria
	B -	Expression of virus coat protein genes in transgenic plants
	C -	Expression of anti-virus genes in vectors that transmit viruses
	D -	Expression of ribonuclease (RNase) genes in host plants
8-	Cross protection against viruses in transgenic plants can be obtained by
	A -	inoculating the susceptible strain of a crop with a mild strain of a virus that helps in developing resistance against more virulent strain
	B -	inoculating the susceptible strain with the coat proteins of virulent strain
	C -	inoculating the susceptible strain with genes of nucleocapsid
	D -	Any of the above
9-	Bruise resistant tomatoes have been developed by the expression of antisense RNA against
	A -	glycerol 1 phosphate acyl transferase
	B -	polygalactouranase
	C -	ACC deaminase
	D -	Sucrose phosphate synthase gene
10-	Which cell-based technology endows a cell with increased ability to harness energy?
	A -	Chlybridization
	B -	Cybridization
	C -	Mibridization
	D -	Protoplast fusion

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