Gibberellins were first extracted from

Options

A. Coeloptile tip
B. Root tip
C. Fungus
D. Bacterium

Answer

**Step-by-Step Solution:**

1. **Identify the Source of Gibberellins**: Gibberellins were first extracted from a specific organism.

2. **Name the Organism**: The organism from which gibberellins were first extracted is a fungal strain known as *Gibberella fujikuroi*.

3. **Historical Context**: This discovery was made by a Japanese scientist named Ikuroh Sakaguchi.

4. **Connection to Plant Growth**: The extraction of gibberellins was linked to a phenomenon observed in rice plants, specifically a condition known as "foolish seedling disease," which caused dwarf rice plants to grow exceptionally tall.

5. **Conclusion**: Therefore, the correct answer to the question "Gibberellins were first extracted from" is "fungus."

**Final Answer**: Gibberellins were first extracted from a fungus.

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