Assertion (A) : Ethylene helps the plants to increase their absorption surface.
Reason (R) : It promotes root growth and root hair formation.
1. Both (A) and reason are true and (R) is the correct explanation of (A)
2. Both (A) assertion 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 statements
A : Ethephon hastens fruit ripening in tomatoes.
R : Ethephon releases ethylene readily.
1 If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark(1).
2 If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2).
3 If Assertion is true statement but reason is false, then mark (3).
4 If both Assertion and Reason are false statements, then mark (4).
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 |
Which one of the following pairs, is not correctly matched?
1. IAA – Cell wall elongation
2. Abscissic acid – Stomatal closure
3. Gibberellic acid – Leaf fall
4. Cytokinin – Cell division
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) |
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 :-
(1) (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
(2) (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
(3) (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
(4) (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
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 |
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 |