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  • 1(current)
Q. No.

Match the following concerning the activity/function and the phytohormone involved:-

(a) Fruit ripener (i) Abscisic acid
(b) Herbicide (ii) GA 3
(c) Bolting agent (iii) 2, 4-D
(d) Stress hormone (iv) Ethephon

Select the correct option from following:-

(a) (b) (c) (d)
1. (ii) (iii) (iv) (i)
2. (iii) (iv) (ii) (i)
3. (iv) (iii) (ii) (i)
4. (iv) (ii) (i) (iii)
Subtopic:  Growth Hormones & Auxin | Gibberellin | Ethylene | Abscisic Acid |
 93%
Level 1: 80%+
Hints

Match the Following:

Column I

Column II

A. IAA

B. ABA

C. Ethylene

D. GA

E. Cytokinin

1. Herring sperm DNA.

2. Bolting

3. Stomatal closure

4. Weed-free lawns

5. Ripening of fruits.

Codes
 

Options:  A   B   C   D   E 
1. 4 3 5 2 1
2. 5 3 4 2 1
3. 4 1 4 3 2
4. 5 3 2 4 4 

 

Subtopic:  Auxin Function | Gibberellin | Cytokinin | Ethylene | Abscisic Acid |
 94%
Level 1: 80%+
Hints
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R): 
Assertion (A): Spraying sugarcane crops with gibberellins increase the yield by as much as 20 tonnes per acre.
Reason (R): Sugarcane stores carbohydrates such as sugar in their stems.
In the light of the above statements choose the correct answer from the options given below:
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. Both (A) and (R) are False.
Subtopic:  Gibberellin |
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
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Read the following statements: 
(i) GA causes increase in length of grape stalks and causes apples to elongate and improve its shape 
(ii) GA causes bolting in beet, cabbage and many plants with rosette habit 
(iii) Kinetin is a modified cytosine 
(iv) Cytokinins are abundant in root apices, developing shoot buds and young fruits
(v) Cytokinins cause lateral shoot growth and adventitious shoot formation 

Which of the above statements are correct? 
1. (i), (ii) and (iii) 
2. (ii) only 
3. (iii) and (iv) 
4. (i), (ii), (iv) and (v)  
Subtopic:  Gibberellin | Cytokinin |
 88%
Level 1: 80%+
Hints
Match List I with List II:
List I List II
A. Abscisic acid I. Induce parthenocarpy
B. Gibberellin II. Delay senescence
C. Auxin III. Regulates dormancy
D. Ethylene IV. Promotes root growth

Choose the correct answer from the options given below:
1. A - (III); B - (II); C - (I); D - (IV)
2. A - (II); B - (I); C - (IV); D - (III)
3. A - (III); B - (II); C - (IV); D - (I)
4. A - (I); B - (II); C - (III); D - (IV)

 
Subtopic:  Growth Hormones & Auxin | Gibberellin | Ethylene | Abscisic Acid |
 77%
Level 2: 60%+
Hints
Match List I with List II
List I List II
A. Indole Acetic Acid I. Increase length of grapes stalks
B. Zeatin II. Hastens fruit ripening in tomatoes
C. Gibberellic acid III. Overcome apical dominance
D. Ethephon IV. Rooting in stem cuttings

Choose the correct answer from the option given below:
1. A-II, B-I, C-IV, D-III
2. A-IV, B-II, C-I, D-III
3. A-IV, B-III, C-I, D-II
4. A-III, B-IV, C-II, D-I




 
Subtopic:  Auxin Function | Gibberellin | Ethylene |
 89%
Level 1: 80%+
Hints
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Match List-I with List-II
List-I List-II
(A) Auxin (I) Promotes female flower formation in cucumber
(B) Gibberellin (II) Overcoming apical dominance
(C) Cytokinin (III) Increase in the length of grape stalks
(D) Ethylene (IV) Promotes flowering in pineapple

Choose the correct answer from the options given below:
Options: (A) (B) (C) (D)
1. II I IV III
2. IV III II I
3. I III IV II
4. III II I IV
Subtopic:  Auxin Function | Gibberellin | Cytokinin | Ethylene |
 87%
Level 1: 80%+
NEET - 2023
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