- 1(current)
Q. No.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.
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| 1. Abscisic acid | 2. Phenolic acids |
| 3. Para-ascorbic acid | 4. Gibberellic acid |
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1. Mechanical abrasions or vigorous shaking
2. Microbial action
3. Subjecting seeds to chilling conditions
4. Treating seeds with abscisic acid or para-ascorbic acid
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Consider the given two statements:
I: Seeds of some species remain dormant, even if sown in a favourable space, until a specific environmental cue causes them to break dormancy.
II: Seeds of many desert plants, for example, germinate only after a substantial rainfall.
1. I is correct but II is incorrect.
2. Both I and II are correct and II explains I.
3. Both I and II are correct but II does not explain I.
4. I is incorrect but II is correct.
- 1(current)
Q. No.
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