The concept of key was introduced by

Options

A. John Ray
B. Bentham
C. Linnaeus
D. Hutchinson

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Concept of Key**: A taxonomical key is a tool used for identifying and classifying organisms based on their characteristics. It helps in distinguishing between different species by comparing their similarities and differences.

2. **Historical Context**: The concept of a taxonomical key is significant in the field of taxonomy, which is the science of classification of living organisms.

3. **Key Contributors to Taxonomy**:
- Carl Linnaeus is known as the father of taxonomy and developed the binomial nomenclature system.
- Bentham and Hooker contributed to the classification of plants and animals, particularly in the context of the plant kingdom.
- John Ray is credited with introducing the concept of the taxonomical key.

4. **Understanding the Structure of a Key**:
- A taxonomical key typically consists of paired statements (called couplets) that present contrasting characteristics.
- Users of the key make choices between these options to identify the organism in question.

5. **Terminology**: Each statement in a taxonomical key is referred to as a "lead," which guides the user towards the correct identification of the organism.

6. **Conclusion**: The concept of the taxonomical key was introduced by John Ray, making him a significant figure in the field of taxonomy.

**Final Answer**: The concept of key was introduced by John Ray.

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