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Q. No.Statement A: Different plants have a different critical duration of light.
Statement B: Day-neutral plants require light exposure equal to critical duration, to induce flowering in them.
1. Only statement A is correct
2. Only statement B is correct
3. Both statements are correct
4. Both statements are incorrect
Subtopic: Photoperiodism (OLD NCERT) |
64%
From NCERT
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In which of the following plants, the hypothetical hormone responsible for flowering due to light exposure translocates from leaves to shoot apices to induce flowering?
1. Sugarbeet
2. Tomato
3. Pepper
4. Cucumber
1. Sugarbeet
2. Tomato
3. Pepper
4. Cucumber
Subtopic: Photoperiodism (OLD NCERT) | Vernalization (OLD NCERT) |
57%
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Plant growth is a cumulative effect of:
1. Only genomic control
2. Only intrinsic controls
3. Only extrinsic controls
4. Both extrinsic and intrinsic control
1. Only genomic control
2. Only intrinsic controls
3. Only extrinsic controls
4. Both extrinsic and intrinsic control
Subtopic: Growth |
93%
From NCERT
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Among the following substance, select the substance/(s) that can be employed to delay leaf senescence.
a. Autoclaved herring sperm DNA
b. Corn-kernel suspension
c. Coconut milk
1. Only a
2. Only a and c
3. Only b and c
4. all a, b and c
a. Autoclaved herring sperm DNA
b. Corn-kernel suspension
c. Coconut milk
1. Only a
2. Only a and c
3. Only b and c
4. all a, b and c
Subtopic: Growth Hormones & Auxin |
84%
From NCERT
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Which of the following methods can be used for hedge-making in a garden?
1. Vernalization
2. Exposure of plant to high-intensity light
3. Application of cytokinin
4. Irrigation
1. Vernalization
2. Exposure of plant to high-intensity light
3. Application of cytokinin
4. Irrigation
Subtopic: Auxin Function |
59%
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Which of the following fruits cannot be artificially ripened by gaseous plant hormones?
1. Tomato
2. Cherry
3. Mango
4. Banana
1. Tomato
2. Cherry
3. Mango
4. Banana
Subtopic: Ethylene |
60%
From NCERT
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Internode elongation in deep water rice plants can be achieved by:
1. GA
2. Ethylene
3. Cytokinin
4. Auxin
1. GA
2. Ethylene
3. Cytokinin
4. Auxin
Subtopic: Ethylene |
86%
From NCERT
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How many of the following PGRs does/do not show acidic nature?
A. Auxin
B. Gibberellins
C. Cytokinin
D. Ethylene
E. ABA
1. One
2. Two
3. Three
4. Four
A. Auxin
B. Gibberellins
C. Cytokinin
D. Ethylene
E. ABA
1. One
2. Two
3. Three
4. Four
Subtopic: Growth Hormones & Auxin |
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Subtopic: Gibberellin |
77%
From NCERT
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The carbohydrate content of sugarcane can be increased with the help of:
1. ABA
2. Ethylene
3. GA
4. Auxin
1. ABA
2. Ethylene
3. GA
4. Auxin
Subtopic: Gibberellin |
92%
From NCERT
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