Q. No.
During seed germination, its stored food is mobilised by:
1. ethylene 2. cytokinin 3. ABA 4. gibberellin
Phototropic curvature is the result of uneven distribution of.
1. gibberellin
2. phytochrome
3. cytokinins
4. auxin
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Coiling of garden pea tendrils around any support is an example of
1. thigmotaxis
2. thigmonasty
3. thigmotropism
4. thermotaxis
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1. Indole-butyric acid
2. Indole-3-acetic acid
3. Gibberellic acid
4. Abscisic acid
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Importance of day length in flowering of plants was first shown in
1. Lemna
2. tobacco
3. cotton
4. Petunia
Opening of floral buds into flowers, is a type of:-
1. autonomic movement of locomotion
2. autonomic movement of variation
3. paratonic movement of growth
4. autonomic movement of growth
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Which one of the following pairs, is not correctly matched?
1. Abscisic acid - Stomatal closure
2. Gibberellic acid - Leaf fall
3. Cytokinin - Cell division
4. IAA - Cell wall elongation
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 |
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