Transgenic Plant MCQs

Question 1

Cross protection against viruses in transgenic plants can be obtained by

Accepted Answer

inoculating the susceptible strain of a crop with a mild strain of a virus that helps in developing resistance against more virulent strain

Answer

inoculating the susceptible strain with the coat proteins of virulent strain

Answer

inoculating the susceptible strain with genes of nucleocapsid

Answer

any of the above

Question 2

Bruise resistant tomatoes have been developed by the expression of antisense RNA against

Accepted Answer

polygalactouranase

Answer

glycerol 1 phosphate acyl transferase

Answer

ACC deaminase

Answer

Sucrose phosphate synthase gene

Question 3

Which cell-based technology endows a cell with increased ability to harness energy?

Accepted Answer

Chlybridization

Answer

Cybridization

Answer

Mibridization

Answer

Protoplast fusion

Question 4

The first field tests were conducted with which of the following genetically altered organism?

Accepted Answer

Strawberry seedlings sprayed with ice-minus bacteria

Answer

bt Corn

Answer

Vaccinia virus containing a gene from the rabies virus

Answer

The flavrsavr tomato

Question 5

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

Accepted Answer

silenced

Answer

altered

Answer

replaced

Answer

relocated

Question 6

Antisense technology

Accepted Answer

selectively blocks expression of a gene

Answer

combines genetic material from different species

Answer

combines organelles and cells

Answer

alters or transfers cells

Question 7

Antisense transgenic plants produced fruit that softened

Accepted Answer

more slowly than the normal fruit

Answer

more rapidly than the normal fruit

Answer

as the normal fruits

Answer

none of these

Question 8

Insect resistance in the transgenic plant has been achieved by

Accepted Answer

all of the above

Answer

transferring genes for Bt toxins

Answer

transferring genes for protease inhibitors

Answer

transferring genes for other insecticidal secondary metabolities

Question 9

Resistance to L-phosphinothrium in tobacco plants is developed by the transfer of

Accepted Answer

gene for GS (glutamine synthase)

Answer

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

Answer

gene for ALS (acetolactate synthase)

Answer

any of the above