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The assemblage of all the populations belonging to different species occurring in an area is the definition of

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Important Questions on Ecological Adaptations, Succession and Ecological Services

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The biologically inhabited part of earth consisting of all ecosystems of the world is
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Structural and functional unit of nature is called
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Classification of plant communities was given by
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  List-I   List-II
A) Tansley I. First used the term ecology
B) Warming II. Subsequently used term ecology
C) Reiter III. Classified plant communities based on water relations
D) Haeckel IV. Coined the term Ecosystem

The correct match is

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The correct sequence of levels of organisation present in the body of evolved plants is
A. Cells
B. Organs
C. Tissue system
D. Tissue

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Arrange the following scientists in chronological order based on their contribution in Ecology
I. Odum
II. Warming
III. A.G Tansley
IV. Reiter
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Arrange the following in ascending order of
complexity
I. Biosphere
II. Community
III.Ecosystem
IV. Population