C2H4 or Ethylene are …...or derivative of….

1.Indol compounds

2.Gases

3.carotenoids

4.Terpenes

Subtopic:  Ethylene |
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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 |
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Ethephon hastens the fruit ripening in tomatoes and apple and accelerates abscission in flowers and fruits. Above statement indicates that ethephon must release –

1. ABA                                                          
2. C2H4
3. IAA                                                          
4. GA7

Subtopic:  Ethylene |
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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 promotor of growth activities

Subtopic:  Ethylene |
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Which of the following hormones is common in both the categories of plant promotor and plant inhibitor?

1.GA

2.ABA

3.Auxin

4.Ethylene

Subtopic:  Ethylene |
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Match the following :-

 

Column A

 

Column B

(i)

Auxin

(a)

Brewing industry

(ii)

Gibbrelic Acid

(b)

Xylem differentiation

(iii)

Cytokinin

(c)

Fruit ripening

(iv)

Ethylene

(d)

Overcome Apical dominance

1. (i) (b), (ii) (a), (iii) (d), (iv) (c)

2. (i) (b), (ii) (a), (iii) (c), (iv) (d)

3. (i) (a), (ii) (b), (iii) (d), (iv) (c)

4. (i) (b), (ii) (d), (iii) (a), (iv) (c)

Subtopic:  Auxin Function | Gibberellin | Cytokinin | Ethylene |
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Thinning of cotton and promotion of femaleness in cucumber are physiological effects of PGR which 

1. Helps of withstand desiccation conditions and is antagonistic to GAs

2. Increases the market period of fruits by delaying senescence

3. Is synthesized in large amounts in ripening fruits and tissues undergoing senescence

4. Prevents fruit and leaf drop at early stages and produced by growing apices of stem

Subtopic:  Ethylene |
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Plant growth regulator, which promotes senescence and abscission of plant organs, is also related to which of the following physiological effects?

1. Thinning of cotton, cherry, and walnut

2. Overcome apical dominance

3. Early seed production in conifers

4. Formation of new leaves

Subtopic:  Ethylene |
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The PGR used to initiate flowering and for synchronizing fruit-set in pineapples is:

1. Abscisic acid
2. Cytokinin
3. Auxin
4. Ethylene

Subtopic:  Ethylene |
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A. _______ hormone is most widely used PGR in
agriculture.
B. _______ hormone is related with Richmond Lang
effect.
         A             B
1. Auxin          CK
2. Auxin          GA
3. Ethylene      CK
4. ABA            CK

Subtopic:  Cytokinin | Ethylene |
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