Indole Acetic Acid and Indole Butyric Acid are

Options

A. synthetic auxins
B. growth inhibitors
C. natural auxins
D. herbicides

Answer

**Step-by-Step Solution:**

1. **Identify the Compounds**: The question mentions two compounds: Indole Acetic Acid (IAA) and Indole Butyric Acid (IBA).

2. **Classify the Compounds**: Both IAA and IBA are classified as auxins, which are a type of plant hormone involved in various growth processes.

3. **Determine the Type of Auxins**: IAA is a natural auxin produced in plants, while IBA is also considered a natural auxin, although it can be synthesized.

4. **Differentiate from Other Categories**: The question provides options including synthetic auxins, growth inhibitors, natural auxins, and herbicides.
- Synthetic auxins include compounds like NAA (Naphthaleneacetic acid) and 2,4-D (2,4-Dichlorophenoxyacetic acid).
- Growth inhibitors include hormones like Abscisic Acid (ABA) and Ethylene.
- Herbicides are chemicals used to kill unwanted plants, and while some auxins can act as herbicides (like 2,4-D), IAA and IBA are not classified as herbicides.

5. **Conclusion**: Based on the classification, both Indole Acetic Acid and Indole Butyric Acid are categorized as natural auxins.

6. **Final Answer**: Therefore, the correct classification for Indole Acetic Acid and Indole Butyric Acid is that they are natural auxins.

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