Discussion
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- Question
Integrated octopine T DNA occurs as
Options- A. single segment
- B. two segments
- C. three segments
- D. four segments
- Correct Answer
- two segments
- 1. The phenomenon of the reversion of mature cells to the meristematic state leading to the formation of callus is known as
Options- A. redifferentiation
- B. dedifferentiation
- C. either (a) or (b)
- D. none of these Discuss
- 2. Cellular totipotency is the property of
Options- A. plants
- B. animals
- C. bacteria
- D. all of these Discuss
- 3. Which breeding method uses a chemical to strip the cell wall of plant cells of two sexually incompatible species?
Options- A. Mass selection
- B. Protoplast fusion
- C. Transformation
- D. Transpiration Discuss
- 4. Protoplasts are the cells devoid of
Options- A. cell membrane
- B. cell wall
- C. both cell wall and cell membrane
- D. none of these Discuss
- 5. Which of the following is used in the culture of regenerating protoplasts, single cells or very dilute cell suspensions?
Options- A. Nurse medium
- B. Nurse or feeder culture
- C. Both (a) and (b)
- D. None of these Discuss
- 6. Crown gall tissue
Options- A. can be cultivated in vitro in absence of bacteria
- B. retains tumorous properties when cultivated
- C. both (a) and (b)
- D. shows tumorous properties only in presence of bacteria Discuss
- 7. Vir genes required for the T-DNA transfer and processing are located
Options- A. on the T-DNA
- B. outside the T-DNA region
- C. on the plant genome
- D. none of these Discuss
- 8. Virulence trait of Agrobacterium tumefaciens is borne on
Options- A. chromosomal DNA
- B. tumour inducing plasmid DNA
- C. both chromosomal and plasmid DNA
- D. cryptic plasmid DNA Discuss
- 9. Which of the following are used as selection marker for the cells transformed with Agrobacterium?
Options- A. Neomycin phosphotransferase
- B. Streptomycin phosphotransferase
- C. Hygromycin phosphotransferase
- D. any of the above Discuss
- 10. The right segment of octopine T-DNA (TR) is necessary for
Options- A. enzymes for agropine biosynthesis
- B. tumour formation
- C. conjugative transfer
- D. all of these Discuss
Gene Transfer in Plants problems
Search Results
Correct Answer: dedifferentiation
Correct Answer: plants
Correct Answer: Protoplast fusion
Correct Answer: cell wall
Correct Answer: Both (a) and (b)
Correct Answer: both (a) and (b)
Correct Answer: outside the T-DNA region
Correct Answer: tumour inducing plasmid DNA
Correct Answer: any of the above
Correct Answer: enzymes for agropine biosynthesis
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