Gibberellin was isolated from:
Correct answer: B. A fungus
- A. An algae
- B. A fungus
- C. A bacterium
- D. A virus
Explanation
The correct answer is that gibberellins were first isolated from a fungus, specifically Gibberella fujikuroi. This fungus is known for causing the 'foolish seedling' disease in rice, which results in excessive elongation of the plant. Algae, bacteria, and viruses do not produce gibberellins and are therefore incorrect choices for this question.
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