Which of the following is used for artificial ripening of fruits?
(a) Auxin
(b) ABA
(c) Ethylene gas
(d) Cytokinin

Options

A. Auxin
B. ABA
C. Ethylene gas
D. Cytokinin

Answer

To determine which substance is used for artificial ripening of fruits, let's analyze the options provided:

1. **Understanding the Options**:
- (a) **Auxin**: This is a plant hormone that primarily promotes cell elongation and is involved in various growth processes but is not specifically known for ripening fruits.
- (b) **ABA (Abscisic Acid)**: This hormone is involved in stress responses and inhibiting growth, and it plays a role in the maturation of seeds rather than fruit ripening.
- (c) **Ethylene gas**: Ethylene is a gaseous plant hormone that is well-known for its role in the ripening of fruits. It promotes the ripening process by affecting the cells in the fruit.
- (d) **Cytokinin**: This hormone primarily promotes cell division and is involved in growth and development but does not play a significant role in fruit ripening.

2. **Identifying the Correct Answer**:
- Among the options, ethylene gas is the only hormone that is directly associated with the process of fruit ripening. It is commonly used in agriculture for the artificial ripening of fruits such as bananas, tomatoes, and mangoes.

3. **Conclusion**:
- Therefore, the correct answer to the question is **(c) Ethylene gas**.