The PGRs of the other group which play an important role in plant growth inhibiting activities is not

1.Ethylene

2.ABA

3.GA

4.All of these

Subtopic:  Gibberellin |
 71%
From NCERT
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Which of the following hormones is common in both the categories of plant promoter and plant inhibitor?

1.GA

2.ABA

3.Auxin

4.Ethylene

Subtopic:  Ethylene |
 87%
From NCERT
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Which of the following is wrong?

1.ABA is Growth inhibiting regulator

2.Ethylene could fit either of the groups, inhibitors and activators.

3.Auxins, GA and Cytokinins are plant promoters

4.Ethylene is largely a promoter of growth activities

Subtopic:  Ethylene |
 85%
From NCERT
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The Discovery of PGRs

1.Four discovery were accidental one was with a planned experiment

2.Three discovery were accidental Two were with a planned experiment

3.Two discovery were accidental Three were with a planned experiment

4.All five we're accidental

Subtopic:  Growth Hormones & Auxin |
 81%
From NCERT
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Phototropism is firstly studied by

1.Charles Darwin and his son Francis Darwin

2.Charles Darwin and his friend Francis Darwin

3.Charles Darwin and his brother Francis Darwin

4.Charles Darwin and his colleague Francis Darwin

Subtopic:  Growth Hormones & Auxin |
 94%
From NCERT
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……...is the site of transmittable influence that caused the bending of the entire……..

1.Coleorrhiza

2.Coleoptile

3.Auxin

4.Scutellum

Subtopic:  Growth Hormones & Auxin |
 81%
From NCERT
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Auxin was isolated by

1.F. W. Went

2.Charles Darwin

3.Francis Darwin

4.F. Skoog

Subtopic:  Growth Hormones & Auxin |
 92%
From NCERT
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Find the wrong match.

1.F. W. Went - Oat seedlings

2.Charles Darwin - Canary Grass

3.Francis Darwin - Canary Grass

4.E. Kurosawa- Orange

Subtopic:  Gibberellin |
 89%
From NCERT
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This picture suggests that

1.Tip of the coleorrhiza is the source of Auxin

2.Tip of coleoptile is the source of Auxin

3.Base of coleoptile is the source of Auxin

4.Base of coleorrhiza is the source of Auxin

Subtopic:  Growth Hormones & Auxin |
 92%
From NCERT
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Here arrows indicate

1.Source of Auxin

2.Direction of bending

3.Direction of light

4.Direction of cap removal

Subtopic:  Growth Hormones & Auxin |
 68%
From NCERT
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