Which one of the following pairs is not correctly matched ?

Options

A. Adenine derivative - kinetin
B. Carotenoid derivat
C. Terpense - IAA
D. Indole compounds - IBA

Answer

To determine which pair is not correctly matched, we will analyze each option provided in the question.

**Step 1: Analyze Option A - Adenine derivative, Kinetine**
- Kinetine is indeed an adenine derivative and is classified as a type of cytokinin. Cytokinins are known to promote cell division and growth in plants.
- **Conclusion**: This pair is correctly matched.

**Step 2: Analyze Option B - Carotenoid derivative**
- The question mentions a carotenoid derivative but does not specify which hormone it refers to. However, it is known that Abscisic Acid (ABA) is a derivative of carotenoids.
- **Conclusion**: While the option is incomplete, it can be inferred that ABA is the correct match for carotenoid derivatives.

**Step 3: Analyze Option C - Tarpen, IAA**
- Indole-3-acetic acid (IAA) is a well-known plant hormone, but it is classified as an auxin, not a terpenoid. Gibberellins, on the other hand, are classified as terpenes.
- **Conclusion**: This pair is not correctly matched.

**Step 4: Analyze Option D - Indole compound, IBA**
- Indole-3-butyric acid (IBA) is indeed an indole compound and is classified as an auxin, similar to IAA.
- **Conclusion**: This pair is correctly matched.

**Final Answer:**
The pair that is not correctly matched is **Option C - Tarpen, IAA**.

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