6- furfuryl ammino purine 2, 4- dichorophenoxy acetic acid and indole -3 - acetic acid are examples respectively for

Options

A. Synthetic auxin, kinetin and natural auxin
B. Gibberellin, natural auxin and kinetin and synthetic auxin
C. Natural auxin, kinetin and synthetic auxin
D. Kinetin, synthetic auxin and natural auxin.

Answer

To answer the question regarding the examples of 6-furfuryl amino purine, 2,4-dichlorophenoxyacetic acid, and indole-3-acetic acid, we can break it down step by step:

### Step 1: Identify 6-furfuryl amino purine
- **Explanation**: The name "6-furfuryl amino purine" contains the term "purine," which is a class of compounds that includes adenine. This compound is related to a specific plant hormone known as cytokinin. Cytokinins are responsible for promoting cell division and growth in plants.
- **Conclusion**: 6-furfuryl amino purine is an example of a **cytokinin**.

### Step 2: Identify 2,4-dichlorophenoxyacetic acid
- **Explanation**: The compound "2,4-dichlorophenoxyacetic acid" is commonly referred to as 2,4-D. It is known to be a synthetic auxin, which is a type of plant hormone that regulates growth and is often used in agriculture as an herbicide to control unwanted plants.
- **Conclusion**: 2,4-dichlorophenoxyacetic acid is an example of a **synthetic auxin**.

### Step 3: Identify indole-3-acetic acid
- **Explanation**: Indole-3-acetic acid (IAA) is a naturally occurring plant hormone that is classified as an auxin. Auxins are crucial for various plant growth processes, including cell elongation and apical dominance.
- **Conclusion**: Indole-3-acetic acid is an example of a **natural auxin**.

### Final Answer
Putting all the information together, we can summarize:
- 6-furfuryl amino purine is an example of **cytokinin**.
- 2,4-dichlorophenoxyacetic acid is an example of **synthetic auxin**.
- Indole-3-acetic acid is an example of **natural auxin**.