Which of the following is associated with dormancy of seeds ?

Options

A. IBA
B. GA
C. Ethylene
D. Ferulic acid

Answer

To determine which of the following is associated with the dormancy of seeds, we will analyze each option provided in the question.

1. **IBA (Indole Butyric Acid)**:
- IBA is a type of auxin. Auxins are plant hormones that promote growth and are primarily involved in processes such as cell elongation and root formation. They are not associated with seed dormancy; instead, they facilitate seed germination by enhancing nutrient solubilization.

2. **GA (Gibberellic Acid)**:
- Gibberellic acid is another plant hormone that promotes growth and is known to break seed dormancy. It helps in the germination process by stimulating the production of enzymes that mobilize stored food in seeds. Therefore, GA is not associated with dormancy but rather with breaking it.

3. **Ethylene**:
- Ethylene is a plant hormone that plays a significant role in various plant processes, including the breaking of seed and bud dormancy. It promotes germination and is involved in the ripening of fruits. Thus, ethylene is also not associated with dormancy.

4. **Ferulic Acid**:
- Ferulic acid is a natural compound found in certain seeds that is associated with seed dormancy. It inhibits seed germination, meaning that its presence can prolong the dormancy period of seeds. As the ferulic acid gets consumed over time, it allows for the possibility of germination.

Based on this analysis, the correct answer to the question is **Ferulic Acid** (option 4), as it is the only compound listed that is directly associated with the dormancy of seeds.

### Summary of Steps:
1. Analyze IBA: Identify its role as an auxin and its effect on seed germination.
2. Analyze GA: Understand its role in breaking dormancy and promoting germination.
3. Analyze Ethylene: Recognize its function in breaking dormancy.
4. Analyze Ferulic Acid: Confirm its role in inhibiting germination and promoting dormancy.