A: 2,4-D is widely used as an herbicide.

R: It is used to kill mature monocotyledonous plants.

1. If both Assertion & Reason are true and the reason is the correct explanation of the assertion.
2. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion.
3. If Assertion is a true statement but the reason is false.
4. If both Assertion and Reason are false statements.
Subtopic:  Auxin Function |
 83%
From NCERT
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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

 

Subtopic:  Auxin Function | Gibberellin | Cytokinin | Ethylene | Abscisic Acid |
 93%
From NCERT
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Assertion: 2, 4-D is artificial auxin.
Reason: 2, 4-D is a weedicide and quickly kills mature monocots.
 
1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion. 
3. Assertion is true but the reason is false.
4. Both assertion and reason are false statements.
Subtopic:  Auxin Function |
 79%
From NCERT
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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%
From NCERT
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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 |
 86%
From NCERT
NEET - 2023
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NEET 2026 - Target Batch - Vital
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