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Q. No.internodal elongation in sugarcane stem is promoted by
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 |
71%
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
76%
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 |
65%
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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) |
68%
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Viviparous type of seed germination is found in
1. Sonneratia
2. Rhizophora
3. Oryza sativa
4. Both (1) & (2)
1. Sonneratia
2. Rhizophora
3. Oryza sativa
4. Both (1) & (2)
Subtopic: Seed Dormancy (OLD NCERT) |
72%
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What is meant by vivipary in plants?
1. Seed germination with subterranean cotyledons
2. Seed germination with epiterranean cotyledons
3. Fruit development without pollination
4. Seed germination inside fruit, while the fruit is still attached to plant
1. Seed germination with subterranean cotyledons
2. Seed germination with epiterranean cotyledons
3. Fruit development without pollination
4. Seed germination inside fruit, while the fruit is still attached to plant
Subtopic: Seed Dormancy (OLD NCERT) |
61%
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Which of the following plants do not show any correlation between exposure to light duration and induction of flowering response?
1. Long-day plant
2. Day-neutral plant
3. Short day plant
4. All of these
2. Day-neutral plant
3. Short day plant
4. All of these
Subtopic: Photoperiodism (OLD NCERT) |
81%
From NCERT
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