I: | Vernalisation enables the plant to have sufficient time to reach maturity. |
II: | It prevents precocious reproductive development late in the growing season. |
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 this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
Consider the given two statements:
I: | Winter varieties of wheat are planted in autumn. |
II: | Spring varieties of wheat are planted in winters. |
1. | Both I and II are correct |
2. | Both I and II are incorrect |
3. | I is correct but II is incorrect |
4. | I is incorrect but II is correct |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
Identify the incorrect statement:
1. Biennials are monocarpic plants that normally flower and die in the second season.
2. Wheat, barley and rye are common biennials.
3. After vernalisation, plants have acquired the ability to flower.
4. Even after vernalisation, plants may require additional seasonal cues or weeks of growth before they will actually flower.
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
True seed dormancy:
1. is caused by conditions within the seed that prevent germination under normally ideal conditions.
2. is caused by unfavourable environmental conditions.
3. is seen in all seeds.
4. does not have any evolutionary significance.
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
1. Abscisic acid | 2. Phenolic acids |
3. Para-ascorbic acid | 4. Gibberellic acid |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
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. |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
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 this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
I: | is characteristic of living organism growing in a natural environment. |
II: | is typical for all cells, tissues and organs of a plant. |
I: | It is more important for plants than most animals. |
II: | Plants have open growth and development. |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.