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Q. No.Plant growth regulators (PGRs) are
1. Simple organic substances of different chemical composition
2. Complex organic substances of different chemical composition
3. Simple and complex organic substances of same chemical composition
4. Small organic substances of same chemical composition
Subtopic: Growth Hormones & Auxin |
73%
From NCERT
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Which type of phytohormone is made up of indole compounds?
1. Zeatin
2. ABA
3. Auxin
4. Gibberellins
1. Zeatin
2. ABA
3. Auxin
4. Gibberellins
Subtopic: Growth Hormones & Auxin |
90%
From NCERT
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Subtopic: Growth Hormones & Auxin |
88%
From NCERT
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Which phytohormone promotes falling of old leaves whereas inhibits falling of young leaves?
1. ABA
2. Cytokinin
1. ABA
2. Cytokinin
3. GA
4. Auxin
4. Auxin
Subtopic: Growth Hormones & Auxin | Auxin Function |
85%
From NCERT
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Which auxins are used in diluted form to produce parthenocarpic fruits?
1. IAA and lBA
2. 2, 4-D and lBA
3. NAA and GA
4. 2, 4-D cmd lAA
1. IAA and lBA
2. 2, 4-D and lBA
3. NAA and GA
4. 2, 4-D cmd lAA
Subtopic: Growth Hormones & Auxin | Auxin Function |
65%
From NCERT
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Subtopic: Growth Hormones & Auxin | Auxin Function |
91%
From NCERT
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Which of the following is not a function of gibberellic acid?
1. Bolting
2. Delayed senescence
3. Seed germination
4. Ripening
1. Bolting
2. Delayed senescence
3. Seed germination
4. Ripening
Subtopic: Gibberellin | Ethylene |
83%
From NCERT
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Apical dominance is stimulated by auxin whereas it is inhibited by
1. Ethylene
2. ABA
3. Gibberellic acid
4. Cytokinin
1. Ethylene
2. ABA
3. Gibberellic acid
4. Cytokinin
Subtopic: Growth Hormones & Auxin | Cytokinin |
79%
From NCERT
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Phytohormones responsible for cell division in callus are _____ and _____
1. ABA and cytokinin
2. Gibberellin and ethylene
3. Auxin and cytokinin
4. Ethylene and cytokinin
1. ABA and cytokinin
2. Gibberellin and ethylene
3. Auxin and cytokinin
4. Ethylene and cytokinin
Subtopic: Growth Hormones & Auxin |
83%
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Subtopic: Ethylene |
93%
From NCERT
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