MCQOPTIONS
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MCQOPTIONS
This section includes 20 Mcqs, each offering curated multiple-choice questions to sharpen your Life Sciences knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following plant hormone is responsible for seed germination? |
| A. | Auxin |
| B. | Gibberellin |
| C. | Ethylene |
| D. | Abscisic acid |
| Answer» C. Ethylene | |
| 2. |
What is bolting? |
| A. | Internode elongation |
| B. | Rooting |
| C. | Shooting |
| D. | Shoot apical meristem |
| Answer» B. Rooting | |
| 3. |
Gibberellin that is synthesized in the shoot transported to different parts of the plant by which medium? |
| A. | Xylem |
| B. | Sieve tube |
| C. | Aleurone layer |
| D. | Phloem |
| Answer» E. | |
| 4. |
Name the site of Gibberellins synthesis |
| A. | Endosperm |
| B. | Coleoptile tip |
| C. | Young leaves |
| D. | Scetullum |
| Answer» B. Coleoptile tip | |
| 5. |
Which of the following is NOT a naturally occurring auxin?a) Indole 3-acetic acid (IAA)b) Indole 3-butyric acid (IBA)c) Phenyl acetic acid (PA |
| A. | Indole 3-acetic acid (IAA) |
| B. | Indole 3-butyric acid (IBA) |
| C. | Phenyl acetic acid (PAA) |
| D. | 2,4-D |
| Answer» E. | |
| 6. |
GIBBERELLIN_THAT_IS_SYNTHESIZED_IN_THE_SHOOT_TRANSPORTED_TO_DIFFERENT_PARTS_OF_THE_PLANT_BY_WHICH_MEDIUM??$ |
| A. | Xylem |
| B. | Sieve tube |
| C. | Aleurone layer |
| D. | Phloem |
| Answer» E. | |
| 7. |
Which of the following plant hormone is responsible for seed germination?$ |
| A. | Auxin |
| B. | Gibberellin |
| C. | Ethylene |
| D. | Abscisic acid |
| Answer» C. Ethylene | |
| 8. |
What_is_bolting?$ |
| A. | Internode elongation |
| B. | Rooting |
| C. | Shooting |
| D. | Shoot apical meristem |
| Answer» B. Rooting | |
| 9. |
Deficiency in which of the following hormone causes dwarfism in the plant? |
| A. | Ethylene |
| B. | Abscisic acid |
| C. | Gibberellin |
| D. | Brassinosteroid |
| Answer» E. | |
| 10. |
Name the stress hormone of the plant. |
| A. | Brassinosteroid |
| B. | Abscisic acid |
| C. | Cytokines |
| D. | Ethylene |
| Answer» C. Cytokines | |
| 11. |
Which of the following plant hormone causes a delay in leaf senescence? |
| A. | Abscisic acid |
| B. | Ethylene |
| C. | Auxin |
| D. | Cytokines |
| Answer» E. | |
| 12. |
Name the first naturally occurring cytokines. |
| A. | Neoxanthin |
| B. | Xanthoxin |
| C. | Zeatin |
| D. | Isopentenyl adenine |
| Answer» D. Isopentenyl adenine | |
| 13. |
Name the site of Gibberellins synthesi? |
| A. | Endosperm |
| B. | Coleoptile tip |
| C. | Young leaves |
| D. | Scetullum |
| Answer» B. Coleoptile tip | |
| 14. |
Mark the one, which is NOT a physiological effect of auxin? |
| A. | Cell elongation |
| B. | Stem elongation |
| C. | Cell differentiation |
| D. | Rooting |
| Answer» C. Cell differentiation | |
| 15. |
Name the amino acid which acts as a precursor of auxin biosynthesis? |
| A. | Serine |
| B. | Tryptophan |
| C. | Valline |
| D. | Tyrosine |
| Answer» C. Valline | |
| 16. |
Which of the following is NOT a naturally occurring auxin? |
| A. | Indole 3-acetic acid (IAA) |
| B. | Indole 3-butyric acid (IBA) |
| C. | Phenyl acetic acid (PAA) |
| D. | 2,4-D |
| Answer» E. | |
| 17. |
Name the plant in which auxin was first discovered? |
| A. | Mustard |
| B. | Pea |
| C. | Oats |
| D. | Rice |
| Answer» D. Rice | |
| 18. |
Which of the following is NOT a plant hormone? |
| A. | Corticosteroid |
| B. | Brassinosteroid |
| C. | Polyamines |
| D. | Salicylic acid |
| Answer» B. Brassinosteroid | |
| 19. |
Growth in plants is mainly driven by turgor pressure. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 20. |
Growth regulators, which control plant growth and development are called___________ |
| A. | Secondary metabolites |
| B. | Macro element |
| C. | Nonessential elements |
| D. | Phytohormone |
| Answer» E. | |