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Q. No.It takes very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield?
1. Cytokinin and Abscisic acid
2. Auxin and Ethylene
3. Gibberellin and Cytokinin
4. Gibberellin and Abscisic acid
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhat is the site of perception of photoperiod necessary for induction of flowering in plants?
1. Leaves
2. Lateral buds
3. Pulvinus
4. Shoot apex
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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 & 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 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 & BiologyOne 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 growth regulators is known as stress hormone ?
1. Abscissic acid
2. Ethylene
3. GA3
4. Indole acetic acid
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology2. linear
3. stair-steps shaped
4. parabolic
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFruit and leaf drop at early stages can be prevented by the application of:
1. Ethylene
2. Auxins
3. Gibberellic acid
4. Cytokinins
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyYou are given a tissue with its potential for differentiation in an artificial culture. Which of the following pairs of hormones would you add to the medium to secure shoots as well as roots?
1. IAA and gibberellin
2. Auxin and cytokinin
3. Auxin and abscisic acid
4. Gibberellin & abscisic acid
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