- 1(current)
Q. No.Match the following concerning the activity/function and the phytohormone involved:-
| (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:-
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (iii) | (iv) | (i) |
| 2. | (iii) | (iv) | (ii) | (i) |
| 3. | (iv) | (iii) | (ii) | (i) |
| 4. | (iv) | (ii) | (i) | (iii) |
Subtopic: Â Growth Hormones & Auxin |Â Gibberellin |Â Ethylene |Â Abscisic Acid |
 93%
From NCERT
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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 |
Subtopic: Â Auxin Function |Â Gibberellin |Â Cytokinin |Â Ethylene |Â Abscisic Acid |
 93%
From NCERT
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
In the light of the above statements choose the correct answer from the options given below:
| Assertion (A): | Spraying sugarcane crops with gibberellins increase the yield by as much as 20 tonnes per acre. |
| Reason (R): | Sugarcane stores carbohydrates such as sugar in their stems. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Â Gibberellin |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Read the following statements:
Which of the above statements are correct?
1. (i), (ii) and (iii)
2. (ii) only
3. (iii) and (iv)
4. (i), (ii), (iv) and (v)
| (i) | GA causes increase in length of grape stalks and causes apples to elongate and improve its shape |
| (ii) | GA causes bolting in beet, cabbage and many plants with rosette habit |
| (iii) | Kinetin is a modified cytosine |
| (iv) | Cytokinins are abundant in root apices, developing shoot buds and young fruits |
| (v) | Cytokinins cause lateral shoot growth and adventitious shoot formation |
Which of the above statements are correct?
1. (i), (ii) and (iii)
2. (ii) only
3. (iii) and (iv)
4. (i), (ii), (iv) and (v)
Subtopic: Â Gibberellin |Â Cytokinin |
 88%
From NCERT
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Match List I with List II:
Choose the correct answer from the options given below:
| List I | List II |
| A. Abscisic acid | I. Induce parthenocarpy |
| B. Gibberellin | II. Delay senescence |
| C. Auxin | III. Regulates dormancy |
| D. Ethylene | IV. Promotes root growth |
Choose the correct answer from the options given below:
| 1. | A - (III); B - (II); C - (I); D - (IV) |
| 2. | A - (II); B - (I); C - (IV); D - (III) |
| 3. | A - (III); B - (II); C - (IV); D - (I) |
| 4. | A - (I); B - (II); C - (III); D - (IV) |
Subtopic: Â Growth Hormones & Auxin |Â Gibberellin |Â Ethylene |Â Abscisic Acid |
 76%
From NCERT
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Match List I with List II
Choose the correct answer from the option given below:
| List I | List II |
| A. Indole Acetic Acid | I. Increase length of grapes stalks |
| B. Zeatin | II. Hastens fruit ripening in tomatoes |
| C. Gibberellic acid | III. Overcome apical dominance |
| D. Ethephon | IV. Rooting in stem cuttings |
Choose the correct answer from the option given below:
| 1. | A-II, B-I, C-IV, D-III |
| 2. | A-IV, B-II, C-I, D-III |
| 3. | A-IV, B-III, C-I, D-II |
| 4. | A-III, B-IV, C-II, D-I |
Subtopic: Â Auxin Function |Â Gibberellin |Â Ethylene |
 89%
From NCERT
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Match List-I with List-II
Choose the correct answer from the options given below:
| List-I | List-II | ||
| (A) | Auxin | (I) | Promotes female flower formation in cucumber |
| (B) | Gibberellin | (II) | Overcoming apical dominance |
| (C) | Cytokinin | (III) | Increase in the length of grape stalks |
| (D) | Ethylene | (IV) | Promotes flowering in pineapple |
Choose the correct answer from the options given below:
| Options: | (A) | (B) | (C) | (D) |
| 1. | II | I | IV | III |
| 2. | IV | III | II | I |
| 3. | I | III | IV | II |
| 4. | III | II | I | IV |
Subtopic: Â Auxin Function |Â Gibberellin |Â Cytokinin |Â Ethylene |
 86%
From NCERT
NEET - 2023
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- 1(current)
Q. No.
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