Identify the incorrectly matched pair:

Scientist PGR discovery
1. Cousins Ethylene
2. Kurosawa Gibberellin
3. Skoog and Miller ABA
4. F. W. Went Auxin

Subtopic:  Gibberellin | Cytokinin | Ethylene | Abscisic Acid |
 83%
From NCERT
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Callus from internodal segments of tobacco stem gets proliferated only if in addition to one of the following – extracts of vascular tissues, yeast extract, coconut milk or DNA, the nutrient medium also contains:

1. Auxins 2. Gibberellins
3. ABA 4. Ethylene
Subtopic:  Growth Hormones & Auxin |
 69%
From NCERT
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Auxin was first isolated from:

 
1. Coconut milk 2. Barley endosperm
3. Oat coleoptiles 4. Human urine
Subtopic:  Growth Hormones & Auxin |
 76%
From NCERT
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Auxin does not:
1. Help to initiate rooting in stem cuttings
2. Promote female flowers in cucumbers
3. Prevent fruit and leaf drop in early stages
4. Promote abscission of older mature leaves and fruits

Subtopic:  Growth Hormones & Auxin |
 78%
From NCERT
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To extend their market period, fruits can be left on trees longer by the application of:

 
1. Auxin 2. Gibberellins
3. Cytokinin 4. ABA
Subtopic:  Gibberellin |
 77%
From NCERT
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Kinetin was first discovered from:

 
1. Herring sperm DNA 2. Coconut milk
3. Yeast extract 4. Corn kernels
Subtopic:  Cytokinin |
 79%
From NCERT
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Cytokinins do not help in:
1. Production of new leaves                 
2. Lateral shoot growth
3. Adventitious shoot formation             
4. Promotion of apical dominance

Subtopic:  Growth Hormones & Auxin | Cytokinin |
 82%
From NCERT
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Cytokinins help in delay of leaf senescence because they:

1. Promote new leaves formation
2. Help overcome apical dominance
3. Help in chloroplast formation in leaves
4. Promote nutrient mobilization
Subtopic:  Cytokinin |
 62%
From NCERT
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Normally, when the seeds are mature, ethylene production increases and builds-up within the fruit, resulting in a climactic event that means:

 
1. A sudden spurt of growth 2. Leaf expansion
3. Rise in respiratory rate 4. Death of radicle
Subtopic:  Ethylene |
 88%
From NCERT
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Which PGR is used to initiate flowering and for synchronizing fruit set in pineapple?

 
1. Cytokinin 2. ABA
3. Ethylene 4. GA
Subtopic:  Ethylene |
 76%
From NCERT
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