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Q. No.Which of the following is an example of short-day plant?
1. Tobacco
2. Sugarbeet
3. Wheat
4. Radish
Subtopic: Photoperiodism (OLD NCERT) |
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
Subtopic: Photoperiodism (OLD NCERT) |
57%
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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
Subtopic: Photoperiodism (OLD NCERT) |
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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
Subtopic: Photoperiodism (OLD NCERT) |
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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Some plants like sugarbeet and cabbage require low temperatures for flowering. This phenomenon is called
1. Photoperiodism
2. Parthenocarpy
3. Vemalisation
4. Abscission
1. Photoperiodism
2. Parthenocarpy
3. Vemalisation
4. Abscission
Subtopic: Vernalization (OLD NCERT) |
84%
From NCERT
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Which of the following is incorrect about vernalisation?
1. It prevents precocious reproductive development
2. It is observed in winter variety of wheat
3. Flowering is stimulated by low temperature
4. It is the resting stage of seeds
1. It prevents precocious reproductive development
2. It is observed in winter variety of wheat
3. Flowering is stimulated by low temperature
4. It is the resting stage of seeds
Subtopic: Vernalization (OLD NCERT) |
66%
From NCERT
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During vernalisation, the stimulus of low temperature is perceived by
1. Stem apex
2. Leaves
3. Roots
4. Bark
1. Stem apex
2. Leaves
3. Roots
4. Bark
Subtopic: Vernalization (OLD NCERT) |
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Growth in plant organs is
1. Qualitative and extrinsic
2. Quantitative and intrinsic
3. Qualitative and intrinsic
4. Quantitative and extrinsic
1. Qualitative and extrinsic
2. Quantitative and intrinsic
3. Qualitative and intrinsic
4. Quantitative and extrinsic
Subtopic: Growth |
54%
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The growth in plants differs from growth in animals in
1. Being localized and indefinite
2. Being indefinite
3. Having indefinite lifespan
4. Having definite lifespan
1. Being localized and indefinite
2. Being indefinite
3. Having indefinite lifespan
4. Having definite lifespan
Subtopic: Growth |
52%
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