E. Kurosawa

1. Reported the appearance of symptoms of the disease in rice seedlings
2. In 1926
3. Used sterile filtrates of the fungus
4. All of these

Subtopic:  Gibberellin |
 94%
From NCERT
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Internodal segments of tobacco stems, the callus is actually

1.An undifferentiated cell

2.A mass of differentiated cell

3.A mass of undifferentiated cell

4.A differentiated cell

Subtopic:  Growth Hormones & Auxin |
 80%
From NCERT
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Find the incorrect statement.

F. Skoog and his co-workers observed that

1. Callus proliferated only if Auxin is there

2. Callus proliferated only if Auxin + extracts of vascular tissue was there

3. Callus proliferated only if Auxin + Yeast extract was there

4. Callus proliferated only if Auxin + coconut milk/DNA was there
 

Subtopic:  Cytokinin |
 54%
From NCERT
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Cytokinesis promoting substance was crystallised by

1.Skoog and Darwin

2.Skoog and Miller

3.Kurosawa

4.Cousins

Subtopic:  Cytokinin |
 88%
From NCERT
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Kinetin term was used for …..by…

1.Cytokinins, Darwin

2.Cytokinin, Skoog And Miller

3.ABA, Darwin

4.ABA, F. Skoog

Subtopic:  Cytokinin |
 94%
From NCERT
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Which of the following is not ABA?

1.Inhibitor-B

2.Abcission II

3.Dormin

4.Bakane

Subtopic:  Abscisic Acid |
 93%
From NCERT
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Three independent researches reported which of the following PGR?

1.ABA

2.Ethylene

3.Auxin

4.Cytokinin

Subtopic:  Abscisic Acid |
 75%
From NCERT
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Cousins confirmed the release of a volatile substance from ripened oranges that

1.Hastened the ripening of already ripened bananas

2.Hastened the ripening of unripened banana

3.Slowed the ripening of unripened bananas

4.Slowed the ripening of oranges

Subtopic:  Ethylene |
 89%
From NCERT
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Auxin means

1.To escape

2.To slow

3.To grow

4.To fasten

Subtopic:  Growth Hormones & Auxin |
 85%
From NCERT
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Auxins was first isolated from

1.Human serum

2.Human urine

3.Human stool

4.Human saliva

Subtopic:  Growth Hormones & Auxin |
 96%
From NCERT
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