The question asks to identify the scientist who first coined the term 'Ecology'. This requires knowledge of the history and pioneers in the field of ecology.
B) Ernst Haeckel is credited with coining the term 'Ecology' in 1866, defining it as the study of the relationships between organisms and their environment.
The question asks to identify the scientist who coined the term 'Ecosystem'. This is a factual recall question from the field of ecology.
Correct Option: D) A.G. Tansley coined the term 'Ecosystem' in 1935 to describe the fundamental unit of ecology, comprising both biotic and abiotic components interacting together.
To identify the largest ecological unit, we need to understand the hierarchical organization of ecological systems, from individual organisms to the global scale. We will define each option and then determine which one encompasses all others.
Based on this hierarchy, the Biosphere is the largest and most inclusive ecological unit.
Correct Option: A) The Biosphere represents the sum of all ecosystems on Earth, encompassing all living organisms and their environments. It is the largest ecological unit.
The question asks for the term that describes a functional unit of nature where living organisms interact with non-living components. This points directly to a fundamental concept in ecology.
Correct Option: B) Ecosystem is the functional unit of nature where living organisms (biotic components) interact with each other and with their non-living physical environment (abiotic components). These interactions involve the flow of energy and cycling of nutrients, making it a self-sustaining unit.
The question asks for the specific term that describes the place where an organism lives. We need to identify the ecological term that defines the physical environment or dwelling of an organism.
Correct Option: D) Habitat — A habitat is the specific place or type of environment where an organism lives and where it can find food, shelter, protection from predators, and mates for reproduction. It is the natural dwelling place of an organism.
The question asks to identify the term that represents the functional role of a species within an ecosystem. This requires understanding key ecological concepts related to how species interact with their environment and other species.
C) Ecological niche — An ecological niche describes the functional role of a species in an ecosystem, including its habitat, what it eats, how it interacts with other species, and its overall impact on the environment.