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- Question
The shortest of mitotic phases is the
Options- A. telophase
- B. interphase
- C. metaphase
- D. anaphase
- Correct Answer
- anaphase
- 1. When F1 plants are crossed with homozygous recessive plants, it is known as
Options- A. test cross
- B. recessive cross
- C. criss-cross
- D. para-cross Discuss
- 2. In case of incomplete dominance, the phenotypic ratio of a monohybrid cross will be
Options- A. 1:2:1
- B. 3:1:1
- C. 1:3:1
- D. 1:1:2 Discuss
- 3. The homologous chromosomes follow the process of synopsis in the
Options- A. leptotene
- B. zygotene
- C. pachytene
- D. diplotene Discuss
- 4. In the meiotic cell divison in daughter cells are produced by two successive division in which
Options- A. first division is equational, second is reductional
- B. first division is reductional and second is equational
- C. both divisions are reductional
- D. both divisions are equational Discuss
- 5. When do kinetochore microtubules pull chromosomes towards opposite spindle poles?
Options- A. In anaphase A
- B. In anaphase B
- C. In metaphase
- D. In telophase Discuss
- 6. A plasmid used to introduce BT toxin into a plant cell
Options- A. carries an antibiotic resistance gene that makes the plant resistant to antibiotics
- B. causes the plant to produce opines
- C. is toxic for the plant cell
- D. carries a bacterial gene with a plant promoter Discuss
- 7. When an organism has a life cycle with alternation of generations, the haploid generation is the
Options- A. zygote
- B. gametophyte
- C. gamete
- D. sporophyte Discuss
- 8. Nitrogen in the plant cell culture media is provided by either ammonia or nitrate salt. In the media
Options- A. utilization of ammonium cause culture pH to drop while utilization of nitrate cause culture pH to rise
- B. utilization of nitrate cause culture pH to drop while utilization of ammonium cause culture pH to rise
- C. utilization of both ammonium and nitrate result in rise in pH
- D. utilization of both ammonium and nitrate result in drop in pH Discuss
- 9. In plant cell culture media, auxins and cytokinins are used in the range of
Options- A. l-50?M
- B. 50-100?M
- C. 100-125?M
- D. more than 125?M Discuss
- 10. Which is/are the disadvantage/(s) of using IAA in plant cell culture media?
Options- A. It is unstable in solution
- B. Gets easily oxidized
- C. Conjugated to inactive form by plant cells
- D. All of the above Discuss
Plant Genetics problems
Search Results
Correct Answer: test cross
Correct Answer: 1:2:1
Correct Answer: zygotene
Correct Answer: first division is equational, second is reductional
Correct Answer: In anaphase A
Correct Answer: carries a bacterial gene with a plant promoter
Correct Answer: gametophyte
Correct Answer: utilization of ammonium cause culture pH to drop while utilization of nitrate cause culture pH to rise
Correct Answer: l-50?M
Correct Answer: All of the above
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