Write about the contributions of John Ray, J.D. Hooker and J.K. Maheshwari.

Explanation

### Step-by-Step Text Solution:

1. **Contribution of John Ray**:
- John Ray was a pioneering naturalist who made significant contributions to the field of taxonomy. He is credited with introducing the term "species" as a taxonomic category. This was a crucial development in the classification of living organisms, as it provided a systematic way to categorize and identify different forms of life.
- Additionally, John Ray authored a comprehensive work titled "Historia Generalis Plantarum," which laid the groundwork for modern botanical classification. This book detailed various plant species and their characteristics, further establishing Ray's importance in the field of biology.

2. **Contribution of J.D. Hooker**:
- J.D. Hooker was a prominent botanist known for his extensive work on the flora of India. His most notable contribution is the book "Flora of British India," which he wrote after conducting detailed studies and explorations in the region. This work provided a thorough account of the plant species found in British India, significantly enhancing the understanding of Indian flora and contributing to botanical science.
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