What is the chemical nature of gibberellin?

Explanation

**Step-by-Step Solution:**

1. **Definition of Gibberellin**: Gibberellins are a class of plant hormones that play a crucial role in regulating various aspects of plant growth and development.

2. **Chemical Classification**: Gibberellins are chemically classified as tetracyclic diterpenoids. This means they are composed of four interconnected rings (tetracyclic) and belong to the larger family of terpenes, which are organic compounds produced by plants.

3. **Acidic Nature**: Gibberellins are acidic in nature, which is why they are often referred to as gibberellic acid. The acidity is a significant characteristic that defines their chemical nature.

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