Which phytohormoes is synthesised in ripened fruits?

Options

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

Answer

To answer the question "Which phytohormone is synthesized in ripened fruits?" let's analyze the options provided and identify the correct one step by step.

### Step 1: Understanding the Options
The question provides four options:
1. Abscisic acid
2. Auxin
3. Cytokinin
4. Ethylene

### Step 2: Analyzing Each Hormone
- **Abscisic Acid**: This hormone is primarily involved in processes such as seed dormancy and the response to stress. It plays a role in the process of senescence (aging) but is not primarily associated with ripening.

- **Auxin**: Auxins are involved in various growth processes, including apical dominance and the regulation of abscission (the dropping of leaves and fruits). However, they are not directly responsible for fruit ripening.

- **Cytokinin**: Cytokinins promote cell division and are involved in various growth processes, but they do not play a significant role in the ripening of fruits.

- **Ethylene**: Ethylene is known as the "ripening hormone." It is produced in ripening fruits and is responsible for the changes that occur during the ripening process, such as color change, softening, and the development of flavor.

### Step 3: Conclusion
Based on the analysis, the hormone that is synthesized in ripened fruits is **Ethylene**.

### Final Answer
The phytohormone synthesized in ripened fruits is **Ethylene**.

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