In 1869, who named a new term ‘Oecologie’that defined the study of the relationship of organisms with their environment?

Ernst Haeckel

The correct answer is Option (2)- Ernst Haeckel

In 1869, the term 'Oecologie,' defining the study of the relationship of organisms with their environment, was named by Ernst Haeckel.

1. Charles Elton:
• Charles Elton was an English ecologist known for his work on animal ecology and the food chain concept.He introduced the idea of ecological pyramids, illustrating the hierarchical structure of trophic levels in ecosystems.
2. Ernst Haeckel:
• Ernst Haeckel was a German biologist, naturalist, and artist who coined the term 'Oecologie' in 1869. Haeckel is also known for his work in zoology, evolution, and popularizing the term "ecology."
3. Eugene Odum:
• Eugene Odum was an American ecologist who played a key role in the development of modern ecology.He is known for his book "Fundamentals of Ecology," which became a foundational text in the field.
4. Arthur Tansley:
• Sir Arthur Tansley was a British ecologist who introduced the term "ecosystem" in the 1930s.He emphasized the importance of studying ecological systems as a whole, including both living organisms and their physical environment.

In summary, these ecologists made significant contributions to the field of ecology, each contributing to the development of concepts and terminology that are fundamental to our understanding of the relationships between organisms and their environment.