Q. No.Which one of the following acids is a derivative of carotenoids?
1. Indole-butyric acid
2. Indole-3-acetic acid
3. Gibberellic acid
4. Abscisic acid
Match the Following:
|
Column I |
Column II |
|
A. IAA B. ABA C. Ethylene D. GA E. Cytokinin |
1. Herring sperm DNA. 2. Bolting 3. Stomatal closure 4. Weed-free lawns 5. Ripening of fruits. |
Codes
| Options: | A | B | C | D | E |
| 1. | 4 | 3 | 5 | 2 | 1 |
| 2. | 5 | 3 | 4 | 2 | 1 |
| 3. | 4 | 1 | 4 | 3 | 2 |
| 4. | 5 | 3 | 2 | 4 | 4 |
| List-I | List-II | ||
| A. | Ethylene | I. | Increase length of stem |
| B. | Cytokinins | II. | Promotion of senescence and abscission |
| C. | ABA | III. | Delaying leaf senescence |
| D. | Gibberellins | IV. | Inhibition of seed germination |
| 1. | A-III, B-I, C-IV, D-II |
| 2. | A-II, B-III, C-IV, D-I |
| 3. | A-IV, B-II, C-I, D-III |
| 4. | A-III, B-IV, C-I, D-II |
Which hormone is used to induce immediate stomatal closure in leaves?
1. Cytokinin
2. Gibberellin
3. Abscisic Acid
4. Auxin
Match the following concerning the activity/function and the phytohormone involved:
| Column I | Column II | ||
| (a) | Fruit ripener | (i) | Abscisic acid |
| (b) | Herbicide | (ii) | GA 3 |
| (c) | Bolting agent | (iii) | 2, 4-D |
| (d) | Stress hormone | (iv) | Ethephon |
Select the correct option from following:
| Options: | (a) | (b) | (c) | (d) |
| 1. | (ii) | (iii) | (iv) | (i) |
| 2. | (iii) | (iv) | (ii) | (i) |
| 3. | (iv) | (iii) | (ii) | (i) |
| 4. | (iv) | (ii) | (i) | (iii) |
Which one of the following growth regulators is known as the stress hormone?
| 1. | Abscisic acid | 2. | Ethylene |
| 3. | GA3 | 4. | Indole acetic acid |
Which one of the following generally acts as an antagonist to Gibberellins?
1. Ethylene
2. ABA
3. IAA
4. Zeatin
| List-I | List-II | ||
| A. | Abscisic acid | I. | Promotes female flowers in cucumber |
| B. | Ethylene | II. | Helps seeds to withstand desiccation |
| C. | Gibberellin | III. | Helps in nutrient mobilisation |
| D. | Cytokinin | IV. | Promotes bolting in beet cabbage etc |
Choose the correct answer from the options given below:
1. A-II, B-III, C- IV, D- I
2. A-III, B-II, C- I, D- IV
3. A-II, B-I, C- IV, D- III
4. A-II, B-I, C- III, D- IV
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