One of the synthetic auxin is
1. NAA
2. IAA
3. GA
4. IBA
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich one of the following acids is a derivative of carotenoids?
1. Indole-butyric acid
2. Indole-3-acetic acid
3. Gibberellic acid
4. Abscisic acid
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySenescence as an active developmental cellular process in the growth and functioning of a flowering plant, is indicated in
1. vessels and tracheid differentiation
2. leaf abscission
3. annual plants
4. floral parts
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyImportance of day length in flowering of plants was first shown in
1. Lemna
2. tobacco
3. cotton
4. Petunia
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyOpening 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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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology“Foolish seedling" disease of rice led to the discovery of:-
1. GA
2. ABA
3. 2,4-D
4. IAA
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyHow 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 Shoot grows faster after pruning
4. It releases wound hormones
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAn enzyme that can stimulate germination of barley seeds is:-
1. α-amylase
2. lipase
3. protease
4. invertase
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyVernalization is the process of
1. flower induction by high temperature treatment
2. inhabitation of flowering by low temperature treatment
3. flower induction by light treatment
4. acceleration of the ability of a plant to produce flowers by chilling treatment
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology