Identify the mismatch of following ?

Options

A. Adenine derivative - kinetin
B. Carotenoid derivative - ABA
C. Terpenes - IAA
D. Indole compounds - IBA

Answer

To identify the mismatch among the given options related to plant hormones and their derivatives, let's analyze each option step by step.

### Step-by-Step Solution:

1. **Examine the First Option: Kinetin**
- Kinetin is identified as N6-furfurylaminopurine.
- It is indeed a derivative of adenine.
- **Conclusion**: This option is correct.

2. **Examine the Second Option: Abscisic Acid (ABA)**
- Abscisic Acid is known to be a carotenoid derivative.
- It is derived from the carotenoid precursor, specifically from xanthophylls.
- **Conclusion**: This option is also correct.

3. **Examine the Third Option: Indole-3-Acetic Acid (IAA)**
- Indole-3-Acetic Acid (IAA) is an auxin and is classified as an indole compound.
- It is not a terpene; terpenes are precursors for gibberellins.
- **Conclusion**: This option is a mismatch.

4. **Final Conclusion**: The mismatch among the options is the third option, which incorrectly classifies IAA as a terpene.

### Answer:
The mismatch is in the third option: Indole-3-Acetic Acid (IAA) is not a terpene; it is an indole compound.

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