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- Question
The controversy regarding the use of Bt corn is that it
Options- A. is potentially harmful to monarch butterflies
- B. is a potential allergen to humans
- C. both (a) and (b)
- D. can contaminate groundwater
- Correct Answer
- both (a) and (b)
- 1. Reducing the expression of pectin methylesterase (PME) has resulted in
Options- 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 Discuss
- 2. Cross protection against viruses in transgenic plants can be obtained by
Options- 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 Discuss
- 3. Which of the following has been widely used to provide resistance against plant viruses?
Options- 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 Discuss
- 4. Which of the following compounds has been produced in transgenic plants to improve tolerance to salt stress and water deficit?
Options- A. Sucrose
- B. Mannitol
- C. Nicotine
- D. Octopine Discuss
- 5. Low temperatures induce the expression of many cold-induced genes. Transgenic plants with improved cold tolerance have been produced by
Options- A. expressing the protein that activates expression of these genes all the time in plants
- B. cooling plants using the Peltier effect
- C. expressing a gene for production of antifreeze (ethylene glycol) in plants
- D. increasing evaporative cooling from leaf surfaces Discuss
- 6. The first field tests were conducted with which of the following genetically altered organism?
Options- A. bt Corn
- B. Vaccinia virus containing a gene from the rabies virus
- C. The flavrsavr tomato
- D. Strawberry seedlings sprayed with ice-minus bacteria Discuss
- 7. The roots of a plant are converted into drug-producing structures in a process called
Options- A. microcosm establishment
- B. mibridization
- C. bioremediation
- D. rhizosecretion Discuss
- 8. Which of the following is not a characteristic of a transgenic crop?
Options- A. herbicide resistance
- B. Bt insect resistance toxin
- C. increased methionine content
- D. none of these Discuss
- 9. Nitrilase is encoded by
Options- A. gene bxn in Klebsiella pneumoniae
- B. bar gene in Streptomyces spp
- C. both (a) and (b)
- D. none of these Discuss
- 10. In transgenic plants that have been manipulated to express patho-genesis-related (PR) proteins all the time it has been shown that
Options- 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 Discuss
Transgenic Plant problems
Search Results
Correct Answer: tomato juice that has higher viscosity
Correct Answer: inoculating the susceptible strain of a crop with a mild strain of a virus that helps in developing resistance against more virulent strain
Correct Answer: Expression of virus coat protein genes in transgenic plants
Correct Answer: Mannitol
Correct Answer: expressing the protein that activates expression of these genes all the time in plants
Correct Answer: Strawberry seedlings sprayed with ice-minus bacteria
Correct Answer: rhizosecretion
Correct Answer: none of these
Correct Answer: gene bxn in Klebsiella pneumoniae
Correct Answer: these proteins trigger the production of other antimicrobial defenses
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