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Q. No.The plant hormone which closes the stomata in stressful conditions is
1. Cytokinin
2. Ga
3. Auxin
4. ABA
Subtopic: Abscisic Acid |
93%
From NCERT
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Both ethylene and ABA are responsible for
| 1. | Promoting the abscission of leaves and fruits |
| 2. | Inducing dormancy of seeds |
| 3. | Stimulation of apical dominance |
| 4. | Ripening |
Subtopic: Ethylene | Abscisic Acid |
64%
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_________ is a period when growth and development is temporarily stopped.
1. Dormancy
2. Abscission
3. Senescence
4. Validation
1. Dormancy
2. Abscission
3. Senescence
4. Validation
82%
From NCERT
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Florigen results in the conversion of
| 1. | Reproductive bud | → Vegetative bud |
| 2. | Shoot apex | → Flowering bud |
| 3. | Root apex | → Reproductive bud |
| 4. | Vegetative bud | → Lateral shoot |
Subtopic: Growth Hormones & Auxin |
69%
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Which type of plants can blossom throughout the year?
1. Long-day plants
2. Short-long day plants
3. Short-day plants
4. Day-neutral plants
1. Long-day plants
2. Short-long day plants
3. Short-day plants
4. Day-neutral plants
73%
From NCERT
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Which of the following is an example of short-day plant?
1. Tobacco
2. Sugarbeet
3. Wheat
4. Radish
1. Tobacco
2. Sugarbeet
3. Wheat
4. Radish
62%
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Most of the winter flowering plants belong to
1. Short long day plants
2. Long day plants
3. Short day plants
4. Day neutral plants
1. Short long day plants
2. Long day plants
3. Short day plants
4. Day neutral plants
60%
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Cucumber and tomato are the examples of
1. Day-neutral plants
2. Short day plants
3. Long-day plants
4. Long short-day plants
1. Day-neutral plants
2. Short day plants
3. Long-day plants
4. Long short-day plants
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The site of perception of light in plants for flowering is
1. Stems
2. Roots
3. Leaves
4. Fruits
1. Stems
2. Roots
3. Leaves
4. Fruits
88%
From NCERT
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The hormonal substance which migrates from leaves to shoot apices to induce flowering is
1. Dormin
2. Zeatin
3. Kinetin
4. Florigen
1. Dormin
2. Zeatin
3. Kinetin
4. Florigen
Subtopic: Growth Hormones & Auxin |
57%
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