1. An abstract idea or notion.
2. An explanatory variable or principle in a scientific system.
Origin: L. Conceptum, something understood, pp. Ntr. Of concipio, to receive, apprehend
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Plants need to regulate water in order to stay upright and structurally stable. Find out the different evolutionary adaptations of plants in terms of structure (e.g. stomata) and physiological mechanisms (e.g. root pressure, capillarity, transpiration pull, curving of leaves, etc.) that enabled them to maintain the appropriate water level...