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 |
 91%
From NCERT
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Auxein 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 |
 98%
From NCERT
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Which of the following is not isolated from plants?

(1) NAA

(2) IAA

(3) IBA

(4) GA3

Subtopic:  Growth Hormones & Auxin | Auxin Function |
 85%
From NCERT
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For all natural and synthetic compounds involved in growth, which of the following term is used

(1) Auxein

(2) Auxin

(3) GA3

(4) GAs

Subtopic:  Growth Hormones & Auxin | Auxin Function |
 71%
From NCERT
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Auxins

Find the odd one.

(1) Initiate rooting in stem cuttings

(2) Promote flowering e.g. Pineapples

(3) Prevent fruit and leaf drop at early stages

(4) Prevent the abscission of older mature leaves and fruits

Subtopic:  Growth Hormones & Auxin | Auxin Function |
 84%
From NCERT
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In most higher plants, the growing apical bud inhibits the growth of …….. or axillary buds, a phenomenon called………….

(1) Lateral, lateral Dominance

(2) Lateral, Apical Dominance

(3) Apical, Lateral Dominance

(4) Apical, Apical Dominance

Subtopic:  Growth Hormones & Auxin | Auxin Function |
 90%
From NCERT
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For tea plantations, hedge-making, which of the following PGR is used?

1. Auxins

2. Cytokinins

3. GA3

4. ABA

Subtopic:  Growth Hormones & Auxin | Auxin Function |
 78%
From NCERT
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Parthenocarpy in tomatoes is induced by

(1) GA3

(2) ABA

(3) Auxin

(4) Cytokinins

Subtopic:  Growth Hormones & Auxin | Auxin Function |
 94%
From NCERT
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2,4-D widely used to

(1) Kill dicot trees

(2) Kill monocot weeds

(3) Kill dicot weeds

(4) Kill monocot shrubs

Subtopic:  Growth Hormones & Auxin |
 86%
From NCERT
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