Select Chapter Topics:
Q. No.Match each item in Column I with the one in Column II and select the correct match from the codes given:
Codes:
| COLUMN I [PGR] |
COLUMN II [Discovered by] |
||
| A | Auxin | P | F. W. Went |
| B | Gibberellic acid | Q | E. Kurosawa |
| C | Kinetin | R | Miller et al. |
| D | Ethylene | S | H. H, Cousins |
| A | B | C | D | |
| 1. | P | Q | R | S |
| 2. | Q | P | S | R |
| 3. | R | S | Q | P |
| 4. | S | R | P | Q |
Subtopic: Growth Hormones & Auxin |
91%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Subtopic: Abscisic Acid |
86%
Level 1: 80%+
Hints
How does pruning help in making the hedge dense?
| 1. | It induces the differentiation of new shoots from the rootstock |
| 2. | It frees axillary buds from apical dominance |
| 3. | The apical shoots grow faster after pruning |
| 4. | It releases wound hormones |
Subtopic: Auxin Function |
79%
Level 2: 60%+
Hints
There are certain seeds that fail to germinate even when external conditions are favourable. Some of the chemical inhibitors present in such seeds can be all of the following except:
| 1. | Abscisic acids | 2. | Phenolic acid |
| 3. | Para-ascorbic acid | 4. | Gibberellic acid |
Subtopic: Gibberellin |
62%
Level 2: 60%+
Please attempt this question first.
Hints
Which of the following is not a use of plant PGR ethylene?
| 1. | Initiation of flowering and synchronizing fruit set in pineapples. |
| 2. | Induction of flowering in mango. |
| 3. | Ethephon, most common source of ethylene, hastens fruit ripening in tomatoes. |
| 4. | Induction of parthenocarpy in tomatoes. |
Subtopic: Growth Hormones & Auxin | Ethylene |
80%
Level 1: 80%+
Hints
Match each item in Column I with the one given in Column II and select the correct match from the codes given:
Codes:
| Column I | Column II | ||
| A. | Auxins | P. | Terpenes |
| B. | Gibberellins | Q. | Derivatives of carotenoids |
| C. | Cytokinins | R. | Adenine derivative |
| D. | Abscisic acid | S. | Indole compounds |
| A | B | C | D | |
| 1. | S | P | R | Q |
| 2. | P | Q | S | R |
| 3. | Q | R | P | S |
| 4. | R | S | Q | P |
Subtopic: Growth Hormones & Auxin |
93%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
The ratio of cytokinins to auxin controls cell differentiation in a callus, if:
| I. | Auxin levels increase shoot buds develop from the callus |
| II. | Cytokinins level increase, roots form |
| 1. | Only I is correct |
| 2. | Only II is correct |
| 3. | Both I and II are correct |
| 4. | Both I and II are incorrect |
Subtopic: Development | Growth Hormones & Auxin | Cytokinin |
Level 3: 35%-60%
Please attempt this question first.
Hints
Identify the plant growth regulator that is not correctly matched to its chemical nature in the following given options:
|
|
PGR |
Chemical nature |
|
1. |
Ethylene |
Gaseous |
|
2. |
Adenine derivatives |
Kinetin |
|
3. |
Indole compounds |
Auxins |
|
4. |
Terpenes |
Abscisic acid |
Subtopic: Abscisic Acid |
78%
Level 2: 60%+
Hints
Which of the following is not a function of ethylene?
| 1. | Breaking seed and bud dormancy |
| 2. | Horizontal growth of seedlings, swelling of axis and apical hook formation in dicot seedlings |
| 3. | Enhancement of respiration rate during ripening of fruits |
| 4. | Closure of stomata during water stress |
Subtopic: Ethylene | Abscisic Acid |
83%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
When compared to their normal sized counterparts, the dwarf mutant varieties of a plant generally produce less:
| 1. | Auxins | 2. | Gibberellins |
| 3. | Ethylene | 4. | ABA |
Subtopic: Gibberellin |
64%
Level 2: 60%+
Hints
Select Chapter Topics:
© 2025 GoodEd Technologies Pvt. Ltd.