Which hormone is used to induce ripening in banana?
(a) Cytokinin
(b) Ethylene
(c) ABA
(d) `GA_(3)`

Options

A. Cytokinin
B. Ethylene
C. ABA
D. `GA_(3)`

Answer

**Step-by-Step Solution:**

1. **Understand the Question:**
The question asks which hormone is responsible for inducing ripening in bananas.

2. **Review the Options:**
The options given are:
- (a) Cytokinin
- (b) Ethylene
- (c) ABA (Abscisic Acid)
- (d) GA3 (Gibberellic Acid)

3. **Identify the Role of Each Hormone:**
- **Cytokinin:** Primarily involved in cell division and growth.
- **Ethylene:** A gaseous hormone known to promote fruit ripening.
- **ABA (Abscisic Acid):** Generally involved in stress responses and seed dormancy.
- **GA3 (Gibberellic Acid):** Mainly promotes stem elongation and seed germination.

4. **Focus on Ethylene:**
Ethylene is specifically known for its role in the ripening process of fruits, including bananas. It enhances the respiration rate of the fruit, leading to a phenomenon known as "respiratory climacteric," which is a peak in respiration that occurs during ripening.

5. **Select the Correct Answer:**
Based on the information gathered, the hormone that induces ripening in bananas is **(b) Ethylene**.

**Final Answer:**
(b) Ethylene

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