Identify the plant growth regulator that, though is largely an inhibitor but, can be placed in both plant growth promoter and plant growth inhibitor groups?
1. | Auxins | 2. | Gibberellins |
3. | Ethylene | 4. | Abscisic acid |
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Identify the incorrectly matched pair:
Scientist | PGR discovery | |
1. | Cousins | Ethylene |
2. | Kurosawa | Gibberellin |
3. | Skoog and Miller | ABA |
4. | F. W. Went | Auxin |
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Normally, when the seeds are mature, ethylene production increases and builds-up within the fruit, resulting in a climactic event that means:
1. | A sudden spurt of growth | 2. | Leaf expansion |
3. | Rise in respiratory rate | 4. | Death of radicle |
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Which PGR is used to initiate flowering and for synchronizing fruit set in pineapple?
1. | Cytokinin | 2. | ABA |
3. | Ethylene | 4. | GA |
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Match the following :
A. IAA | i. Herring sperm DNA |
B. ABA | ii. Bolting |
C. Ethylene | iii. Stomatal closure |
D. GA | iv. Weed-free lawns |
E. Cytokinins | v. Ripening of fruits |
Options:
A | B | C | D | E | |
1. | iv | iii | v | ii | i |
2. | v | iii | iv | ii | i |
3. | iv | i | v | iii | ii |
4. | v | iii | ii | i | iv |
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1. | ABA | 2. | IAA |
3. | Ethylene | 4. | GA |
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I: | The most widely used compound as source of ethylene is ethephon. |
II: | Ethephon in an aqueous solution is readily absorbed and transported within the plant and releases ethylene slowly. |
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