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- Question
Agrobacterium based gene transfer is efficient
Options- A. only with dicots
- B. only with monocots
- C. with both monocots and dicots
- D. with majority monocots and few dicots
- Correct Answer
- only with dicots
- 1. Phloem is composed of
Options- A. vessel elements and companion cells
- B. tracheids and vessel elements
- C. sieve-tube elements and companion cells
- D. tracheids and sieve-tube elements Discuss
- 2. The ability of the component cells of callus to form a whole plant is known as
Options- A. redifferentiation
- B. dedifferentiation
- C. either (a) or (b)
- D. none of these Discuss
- 3. T-DNA transfer and processing into plant genome requires products of which of the following genes?
Options- A. vir A,B
- B. vir G,C
- C. vir D,E
- D. All of these Discuss
- 4. Plasmids which are maintained as multiple copy number per cell are known as
Options- A. stringent plasmids
- B. relaxed plasmids
- C. cryptic plasmids
- D. none of these Discuss
- 5. Fermentation medium for oxytetracyclin (terramycin) consist of
Options- A. CSL, starch, (NH4)2 SO4, sodium chloride and CaCO3
- B. CSL, (NH4)2 SO4, sodium chloride and CaCO3
- C. CSL, starch,(NH4)2 SO4, ammonium chloride and CaCO3
- D. CSL,(NH4)2 SO4, ammonium chloride and CaCO3 Discuss
- 6. When dissolved oxygen is lower than the critical concentration, viable cell concentration declines because of
Options- A. incomplete glutamine oxidation
- B. increase in specific lactate production from glucose
- C. both (a) and (b)
- D. accumulation of ammonia Discuss
- 7. If starch containing substrates are used for ethanol production, yeast strain can't be used directly because
Options- A. it doesn't contain amylases to hydrolyze starch
- B. starch is not a suitable substrate for the production of ethanol
- C. it is converted to pentose sugar
- D. none of the above Discuss
- 8. Which tropical fruit crop has been successfully engineered to be protected against a lethal virus?
Options- A. Passion fruit
- B. Papaya
- C. Mango
- D. Lychee Discuss
- 9. What are different substrates used for ethanol production?
Options- A. Starch containing substrate
- B. Juices from sugarcane or molasses or sugar beet
- C. Waste product from wood or processed wood
- D. All of the above Discuss
- 10. Which of the following transposable elements are not found in plants?
Options- A. Ac
- B. Tam3
- C. L1
- D. All are found Discuss
More questions
Correct Answer: sieve-tube elements and companion cells
Correct Answer: redifferentiation
Correct Answer: All of these
Correct Answer: relaxed plasmids
Correct Answer: CSL, starch, (NH4)2 SO4, sodium chloride and CaCO3
Correct Answer: both (a) and (b)
Correct Answer: it doesn't contain amylases to hydrolyze starch
Correct Answer: Papaya
Correct Answer: All of the above
Correct Answer: L1
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