Q. No.Cytokinins:
I. Help produce new leaves, chloroplasts in leaves, lateral shoot growth and adventitious root formation.
II. Help overcome the apical dominance.
III. Promote nutrient mobilisation, which helps in the delay of leaf senescence.
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
| 1. ABA | 2. IAA |
| 3. Ethylene | 4. GA |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
1. Vertical growth of seedlings
2. Swelling of axis of dicot seedlings
3. Apical hook formation in dicot seedlings
4. Fruit ripening
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
I: The most widely used compound as source of ethylene is ethephon.
II: Ethephon in an aqueous solution is readily absorbed and transported within the plant and releases ethylene slowly.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. I is incorrect but II is correct
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
1. induce flowering in mango
2. hasten fruit ripening in tomatoes and apples
3. retard abscission of flowers and fruits in cotton cherry and walnut
4. promote female flowers in cucumbers
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Statement I: The root apical meristem and the shoot apical meristem are responsible for the primary growth of the plants and principally contribute to the elongation of the plants along their axis.
Statement II: In dicots and gymnosperms, the lateral meristems, vascular cambium and cork-cambium appear later in life and cause the increase in the girth of the organs in which they are active.
1. Both Statement I and Statement II
2. Only Statement I
3. Only Statement II
4. Neither Statement I nor Statement II
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
I: The region shown as A to G is the zone of elongation.
II. The portion of the axis which is undergoing the phase of maturation lies more distal to the phase of elongation.
| 1. Only I | 2. Only II |
| 3. Both I and II | 4. Neither I nor II |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
I: is characteristic of living organism growing in a natural environment.
II: is typical for all cells, tissues and organs of a plant.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
I: It is more important for plants than most animals.
II. Plants have open growth and development.
1. Both I and II are true and II explains I.
2. Both I and II are true but II does not explain I.
3. I is correct and II is incorrect.
4. I is incorrect and II is correct.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
| 1. Auxins 2. Cytokinins 3. Gibberellins 4. Ethylene |
 |
© 2024 GoodEd Technologies Pvt. Ltd.