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Q. No.Auxins
1. Were first isolated in agar by PaaI
2. Are synthesised using tryptophan as precursor
3. Are found always as bound with amines
4. Are synthesised in shoot apices only
Subtopic: Growth Hormones & Auxin |
55%
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Which of the following plant hormone is used to speed up the malting process in brewing industry?
1. GA3
2. Ethylene
3. Cytokinin
4. Auxin
Subtopic: Gibberellin |
92%
From NCERT
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Foolish seedling disease is caused by a fungus. This study helped in discovery of
1. Gibberellin
2. Cytokinin
3. ABA
4. Auxin
1. Gibberellin
2. Cytokinin
3. ABA
4. Auxin
Subtopic: Gibberellin |
91%
From NCERT
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internodal elongation in sugarcane stem is promoted by
1. Gibberellin
2. Cytokinin
3. Auxin
4. ABA
1. Gibberellin
2. Cytokinin
3. Auxin
4. ABA
Subtopic: Gibberellin |
92%
From NCERT
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Select an incorrect match
1. ABA - Violaxanthin
2. Ethylene - Methionine
3. GA3 - Acetyl CoA
2. Ethylene - Methionine
3. GA3 - Acetyl CoA
4. Cytokinin - Terpenes
Subtopic: Growth Hormones & Auxin |
73%
From NCERT
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Cytokinins help
1. To retain chlorophyll
2. In promoting cell division
3. In overcoming apical dominance
4. More than one option is correct
3. In overcoming apical dominance
4. More than one option is correct
75%
From NCERT
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Which of the following chemicals is/are derived from tRNA?
1. Kinetin
2. IAA
3. Zeatin
4. More than one option is correct
1. Kinetin
2. IAA
3. Zeatin
4. More than one option is correct
Subtopic: Growth Hormones & Auxin |
66%
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Fruit ripening is promoted by the hormone that
1. Promotes thinning of fruits in cherry and walnut
2. Induce parthenocarpy in tomato
3. Promotes flowering in Lemna
4. Is derived from tRNA
1. Promotes thinning of fruits in cherry and walnut
2. Induce parthenocarpy in tomato
3. Promotes flowering in Lemna
4. Is derived from tRNA
Subtopic: Ethylene |
79%
From NCERT
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Abscisic acid is useful in
1. Cell division
2. Seed development
3. Germination of peanut seeds
2. Seed development
3. Germination of peanut seeds
4. Increasing length of stalks in grapes
Subtopic: Abscisic Acid |
75%
From NCERT
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Dormancy in seeds may be due to presence of certain chemicals like
1. Phenolic acid
2. Zeatin
3. NM
4. Amylase
1. Phenolic acid
2. Zeatin
3. NM
4. Amylase
Subtopic: Seed Dormancy (OLD NCERT) |
67%
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