Transgenic Plant

In transgenic plants that have been manipulated to express patho-genesis-related (PR) proteins all the time it has been shown that

A:

these provide no protection at all against pathogens

B:

expression of one PR protein provides high levels of protection against many pathogens

C:

expression of two PR proteins provides some protection against a few pathogens

D:

these proteins trigger the production of other antimicrobial defenses

Answer: D

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Resistance to sulphonyl urea compounds in transgenic tobacco plant has been developed by the transfer of

A:

gene for EPSPS (5-enol-pyruvyl shikimat 3 phosphate synthase)

B:

gene for ALS (acetolactate synthase)

C:

gene for GS (glutamine synthase)

D:

any of the above

Answer: B

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Reducing the expression of pectin methylesterase (PME) has resulted in

A:

plants with resistance to bacteria and fungi

B:

tomato juice that has higher viscosity

C:

tomato fruit that last longer before they become rotten

D:

tomato fruit that will not ripen

Answer: B

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Phosphinothricin acetyl transferase is encoded by

A:

gene bxn in Klebsiella pneumoniae

B:

bar gene in Streptomyces spp

C:

both (a) and (b)

D:

none of these

Answer: B

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Which of the following is not a characteristic of a transgenic crop?

A:

herbicide resistance

B:

Bt insect resistance toxin

C:

increased methionine content

D:

none of these

Answer: D

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Questions for: Transgenic Plant