Q. No.E. Kurosawa
| 1. | Reported the appearance of symptoms of the disease in rice seedlings |
| 2. | In 1926 |
| 3. | Used sterile filtrates of the fungus |
| 4. | All of these |
Find the wrong match.
| 1. | F. W. Went - Oat seedlings |
| 2. | Charles Darwin - Canary Grass |
| 3. | Francis Darwin - Canary Grass |
| 4. | E. Kurosawa- Orange |
Which of the following statements about plant hormones is false?
| 1. | The growth of plants in nature is probably regulated by a combination of growth-stimulating and growth-inhibiting hormones. |
| 2. | Abscisic acid generally promotes growth. |
| 3. | Gibberellins stimulate cell enlargement. |
| 4. | Cytokinins promote cell division. |
In which of the following options the PGR is correctly matched with its two functions?
1. Abscisc acid - (i) Induce immediate stomatal closure in leaves.
(ii) Induce rooting is a twig.
2. Gibberellins - (i) Bolting in rosette plant.
(ii) Speed up the malting process in brewing industry.
3. Ethylene - (i) Delay leaf senescence.
(ii) Controls xylem differentiation.
4. Auxin - (i) Used to kill mocotyledonous weeds.
(ii) Promotes nutrient mobilisation.
In order to increase the yield of sugarcane crops, which of the following plant growth regulators should be sprayed?
| 1. | Ethylene | 2. | Auxins |
| 3. | Gibberellins | 4. | Cytokinins |
Foolish Seedling-
Find the odd one.
1.Bakane
2.Disease of Rice seedlings
3.Caused by viral pathogen
4.Gibberella fujikuroi
Which of the following statements is correct?
1. All GAs are basic
2. All GAs are Acidic
3. Most of the GAs are Acidic
4. Most of the GAs are basic
To increase sugar production in sugarcanes, they are sprayed with
1. IAA
2. cytokinin
3. gibberellin
4. ethylene
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