Assertion: Ethylene can either act as a growth promoter or inhibitor
Reason: Ethylene helps in breaking the dormancy of seeds and buds and is also responsible for the senescence of plant parts like leaves and flower
1. If both assertion and reason are true and the reason is the correct explanation of the assertion
2. If both assertion and reason are true but the reason is not the correct explanation of the assertion
3. If assertion is true but reason is false
4. If both assertion and reason are false statements
Subtopic: Â Ethylene |
 74%
Please attempt this question first.
Hints
Assertion: GA3 can be used to speed up the malting process in brewing industry
Reason: Gibberellin is synthesised only by some fungi
1. If both assertion and reason are true and the reason is the correct explanation of the assertion
2. If both assertion and reason are true but the reason is not the correct explanation of the assertion
3. If assertion is true but reason is false
4. If both assertion and reason are false statements
Reason: Gibberellin is synthesised only by some fungi
1. If both assertion and reason are true and the reason is the correct explanation of the assertion
2. If both assertion and reason are true but the reason is not the correct explanation of the assertion
3. If assertion is true but reason is false
4. If both assertion and reason are false statements
Subtopic: Â Gibberellin |
 64%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Assertion (A): Auxins are effective to prevent early drop of fruits and leaves
Reason (R): Auxins promote abscission of younger leaves and fruits
1. Both (A) and reason are true and (R) is the correct explanation of (A)
2. Both (A) assertion 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 statements
Reason (R): Auxins promote abscission of younger leaves and fruits
1. Both (A) and reason are true and (R) is the correct explanation of (A)
2. Both (A) assertion 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 statements
Subtopic: Â Auxin Function |
 74%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
| Assertion: | 2, 4-D is artificial auxin. |
| Reason: | 2, 4-D is a weedicide and quickly kills mature monocots. |
| 1. | Both assertion and reason are true and the reason is the correct explanation of the assertion. |
| 2. | Both assertion and reason are true but the reason is not the correct explanation of the assertion. |
| 3. | Assertion is true but the reason is false. |
| 4. | Both assertion and reason are false statements. |
Subtopic: Â Auxin Function |
 78%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Which of the following is incorrect?
1. IAA is synthesised from tryptophan
2. Auxin regulates vascular differentiation
3. Gibberellin transport is polar
4. Roughly equal amounts of auxin and cytokinin causes continued proliferation of undifferentiated callus
1. IAA is synthesised from tryptophan
2. Auxin regulates vascular differentiation
3. Gibberellin transport is polar
4. Roughly equal amounts of auxin and cytokinin causes continued proliferation of undifferentiated callus
Subtopic: Â Gibberellin |
 57%
Please attempt this question first.
Hints
Physiologically active form of phytochrome is:
1. \(P_{730} / P_{fr}\)
2. \(P_{660} / P_{r}\)
3. \(P_{700} \)
4. \(P_{680} \)
1. \(P_{730} / P_{fr}\)
2. \(P_{660} / P_{r}\)
3. \(P_{700} \)
4. \(P_{680} \)
Subtopic: Â Photoperiodism (OLD NCERT) |
Please attempt this question first.
Hints
Which is not caused by the deficiency of mineral nutrition?
1. Chlorosis
2. Internode
3. Necrosis
4. Etiolation
1. Chlorosis
2. Internode
3. Necrosis
4. Etiolation
Subtopic: Â Photoperiodism (OLD NCERT) |
 60%
Please attempt this question first.
Hints
Lodging or falling of many crop plants during windy seasons can be prevented by the application of :
1. NAA
2. GA
3. ABA
4. Ethylene
1. NAA
2. GA
3. ABA
4. Ethylene
Subtopic: Â Auxin Function |
 65%
Please attempt this question first.
Hints
Methods to break seed dormancy involves:
1. Stratification
2. Scarification
3. Light exposure
4. More than one option is involved
1. Stratification
2. Scarification
3. Light exposure
4. More than one option is involved
Subtopic: Â Seed Dormancy (OLD NCERT) |
 76%
Please attempt this question first.
Hints
External stimuli would be received most quickly by a plant cell if the receptors for signal transduction were located in the
1. plasma membrane
2. cytoplasmic matrix.
3. endoplasmic reticulum
4. nuclear membrane
1. plasma membrane
2. cytoplasmic matrix.
3. endoplasmic reticulum
4. nuclear membrane
Subtopic: Â Growth Terminology |Â Development |
 67%
Please attempt this question first.
Hints
© 2025 GoodEd Technologies Pvt. Ltd.