- 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: Growth Hormones & Auxin | Gibberellin | Ethylene | Abscisic Acid |
93%
From NCERT
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Hints
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Influences of ethylene on dicot plants include:
1. Only I and II
2. Only III
3. Only II and III
4. I, II and III
| I: | vertical growth of seedlings |
| II: | thinning of the axis |
| III: | apical hook formation |
2. Only III
3. Only II and III
4. I, II and III
Subtopic: Ethylene |
52%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Which of the following is not a function of the plant growth hormone ethylene?
| 1. | It induces flowering in mango. |
| 2. | It retards abscission of flowers and fruits in cotton, cherry, and walnut. |
| 3. | It hastens fruit ripening in tomatoes and apples. |
| 4. | It promotes female flowers in cucumbers. |
Subtopic: Ethylene |
72%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Ethylene:
1. I, II and III are correct
2. Only II
3. I and II are correct
4. Neither I nor II
| I: | is highly effective in fruit ripening. |
| II: | breaks seed and bud dormancy. |
| III: | promotes root growth and root hair formation |
2. Only II
3. I and II are correct
4. Neither I nor II
Subtopic: Ethylene |
80%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
How many of the following statements regarding plant growth regulators (PGRs) are correct?
1. One
2. Two
3. Three
4. Four
| I: | Auxins promote cell elongation and root growth in plants. |
| II: | Gibberellins are responsible for seed germination and stem elongation. |
| III: | Cytokinins inhibit apical dominance and promote lateral bud growth. |
| IV: | Ethylene stimulates fruit ripening and senescence in plants. |
2. Two
3. Three
4. Four
Subtopic: Growth Hormones & Auxin | Gibberellin | Cytokinin | Ethylene |
68%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Match the following plant hormones with their primary functions:
| Column I | Column II | ||
| 1 | Cytokinins | A | Stimulates fruit ripening |
| 2 | Abscisic acid | B | Inhibits shoot growth and promotes seed dormancy |
| 3 | Ethylene | C | Promotes cell division in plant tissues |
| 4 | Gibberellins | D | Stimulates growth and elongation of stems and leaves |
| 1. | 1-C, 2-B, 3-D, 4-A |
| 2. | 1-D, 2-C, 3-B, 4-A |
| 3. | 1-B, 2-D, 3-C, 4-A |
| 4. | 1-C, 2-B, 3-A, 4-D |
Subtopic: Gibberellin | Cytokinin | Ethylene | Abscisic Acid |
93%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Which of the following are functions of ethylene in plants?
| I: | Fruit ripening |
| II: | Closure of stomata in water stress |
| III: | Internode/petiole elongation in deep water rice plants. |
| IV: | Root growth and root hair formation. |
| 1. | Only I, II and III |
| 2. | Only I, III and IV |
| 3. | Only II, III and IV |
| 4. | I, II, III and IV |
Subtopic: Ethylene |
87%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
- 1(current)
Q. No.
© 2025 GoodEd Technologies Pvt. Ltd.