TRANSGENIC PLANT QUIZ

Which of the following gene is transferred to plants that detoxify the herbicide atrazine?

Glutathione S-transferase (GST)

All of these

Nitrilase

Phosphinothrium acetyl transferase

TRUE ANSWER : ?
YOUR ANSWER : ?

Tomatoes exhibiting delayed ripening express antisense RNA against

polygalactouranase

sucrose phosphate synthase gene

glycerol 1 phosphate acyl transferase

ACC deaminase

TRUE ANSWER : ?
YOUR ANSWER : ?

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

herbicide resistance

none of these

Bt insect resistance toxin

increased methionine content

TRUE ANSWER : ?
YOUR ANSWER : ?

The delayed ripening tomato was created by a biotechnologist who __________ a gene.

altered

relocated

silenced

replaced

TRUE ANSWER : ?
YOUR ANSWER : ?

Which cell-based plant technology involves the combining of two cells without cell walls from different species?

Protoplast fusion

Clonal propagation

Cybridization

Mutant selection

TRUE ANSWER : ?
YOUR ANSWER : ?

Metabolic interference is a term used to describe a method to metabolize a compound and prevent the synthesis of something that is normally produced. What compound(s) have been targeted for metabolic interference in tomato?

ACC (1-aminocyclopropane-1-carboxylic acid)

AOA (aminooxyacetic acid)

Both (a) and (b)

SAM (S-adenosylmethionine)

TRUE ANSWER : ?
YOUR ANSWER : ?

ACC demainase gene is responsible for

degradation of ACC an immediate precursor to ethylene

synthesis of polygalactouranase

synthesis for ethylene

both (a) and (b)

TRUE ANSWER : ?
YOUR ANSWER : ?

Low temperatures induce the expression of many cold-induced genes. Transgenic plants with improved cold tolerance have been produced by

expressing a gene for production of antifreeze (ethylene glycol) in plants

expressing the protein that activates expression of these genes all the time in plants

cooling plants using the Peltier effect

increasing evaporative cooling from leaf surfaces

TRUE ANSWER : ?
YOUR ANSWER : ?

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

tomato fruit that will not ripen

tomato fruit that last longer before they become rotten

tomato juice that has higher viscosity

plants with resistance to bacteria and fungi

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the agricultural challenges below cannot be solved with transgenic techniques?

Crops are damaged by frost

Public concern about safety of synthetic pesticides

Crops are killed by a virus

Public preference for organic vegetables

TRUE ANSWER : ?
YOUR ANSWER : ?