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Q. No.Which of the following is formed after differentiation?
1. Secondary phloem
2. Secondary cortex
3. Parenchyma
4. Interfascicular vascular cambium
Subtopic: Growth |
53%
From NCERT
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The ability of a plant to follow different pathways and produce different structures in response to environment is known as
1. Heterophylly
2. Plasticity
3. Efficiency index
4. Vernalisation
1. Heterophylly
2. Plasticity
3. Efficiency index
4. Vernalisation
Subtopic: Development |
90%
From NCERT
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Heterophylly means
1. The appearance of different forms of leaves on the same plant species
2. The appearance of same form of leaves on different plants
3. The appearance of same form of flowers on different plants
4. The appearance of different forms of fruits on the same plant
1. The appearance of different forms of leaves on the same plant species
2. The appearance of same form of leaves on different plants
3. The appearance of same form of flowers on different plants
4. The appearance of different forms of fruits on the same plant
Subtopic: Development |
86%
From NCERT
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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
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%
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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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