- 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) |
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. 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) |
Consider the following statements:
| I. | In low concentrations, auxin can inhibit ethylene formation and transport of precursor in plants; |
| II. | High concentrations of auxin can induce the synthesis of ethylene. |
| III. | Therefore, the high concentration can induce maleness of flowers in some species. |
The correct statements are:
1. I, II, III
2. I, II
3. I, III
4. II, III
Consider the following statements regarding the synthesis and distribution of auxins:
| I. | Auxins are made continuously in the shoot apex and young leaves |
| II. | It moves away from the tip and its movement is described as basipetal and polar |
| III. |
It moves by active transport from cell to cell and is eventually inactivated and degraded by enzymes |
| IV. |
Long term transport can also occur via the vascular system (mainly phloem) from shoots to roots |
| V. | No auxin is made by roots |
The correct statements are:
1. I, II, III
2. I, II, IV
3. II, III, 2
4. III, IV, 34
| (i) | NAA and 2,4-D are synthetic auxins |
| (ii) | Auxins promote flowering in pineapples |
| (iii) | Auxins help to prevent fruit and leaf drop at early stages but promote the abscission of older mature leaves and fruits |
| (iv) | Apical bud removal is applied for hedge making and creating bushy tea plants |
| (v) | Auxin induces parthenocarpy, like, in tomatoes |
How many of the above statements are correct?
1. Four
2. Five
3. Two
4. Three
- 1(current)
Q. No.
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