I. Hastening the ripening of fruits.
II. Synthesis of carotenoids.
Select the option of set of hormones suitable for above functions in plants

Options

A. I-Abscisic, II-Zeatin
B. I-Zeatin, II-Ethylene
C. I-Ethylene, II-Zeatin
D. I-Ethylene, II-Abscisic acid

Answer

To solve the question regarding the suitable set of hormones for hastening the ripening of fruits and the synthesis of carotenoids, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Functions**:
- The first function is **hastening the ripening of fruits**.
- The second function is **synthesis of carotenoids**.

2. **Determine the Hormones Involved**:
- For the **ripening of fruits**, the key hormone involved is **ethylene**. Ethylene is known for its role in promoting the ripening process in many fruits.
- For the **synthesis of carotenoids**, the hormone involved is **abscisic acid (ABA)**. Abscisic acid plays a role in various plant processes, including the synthesis of pigments like carotenoids.

3. **Evaluate the Options**:
- We need to find a set of hormones that includes both ethylene and abscisic acid.
- The options provided in the question should be assessed to see which one contains both of these hormones.

4. **Select the Correct Option**:
- After evaluating the options, the correct set of hormones that includes **ethylene** for ripening and **abscisic acid** for carotenoid synthesis is **option 4**.

### Final Answer:
The suitable set of hormones for the functions of hastening the ripening of fruits and the synthesis of carotenoids is **ethylene and abscisic acid**.

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