Vitamin nicotinamide as well as the plant hormone in dole -3-acetoic acid are formed from

Options

A. Tryptophan
B. Alanine
C. Glutamic acid
D. Serine

Answer

### Step-by-Step Solution:

1. **Identify the Compounds:**
- The question mentions two specific compounds: Vitamin Nicotinamide and Indole-3-acetic acid (IAA).
- Vitamin Nicotinamide is also known as Vitamin B3.
- Indole-3-acetic acid is a plant hormone that acts as an auxin, important for plant growth.

2. **Understand the Importance of Amino Acids:**
- Both Vitamin B3 and Indole-3-acetic acid are derived from amino acids.
- Amino acids are the building blocks of proteins and play a crucial role in various biological processes.

3. **Identify the Key Amino Acid:**
- The amino acid that is specifically involved in the synthesis of both Vitamin B3 (Nicotinamide) and Indole-3-acetic acid is Tryptophan.
- Tryptophan is an essential amino acid that is necessary for growth and development.

4. **Summarize the Relationship:**
- Vitamin Nicotinamide (Vitamin B3) and Indole-3-acetic acid (IAA) are both formed from the amino acid Tryptophan.
- Tryptophan is crucial for the synthesis of these compounds, highlighting its importance in both human nutrition and plant biology.

5. **Conclusion:**
- Therefore, the correct answer to the question is that Vitamin Nicotinamide and Indole-3-acetic acid are formed from Tryptophan.

### Final Answer:
Vitamin Nicotinamide and Indole-3-acetic acid are formed from Tryptophan.

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