Question

Range of tolerance

31 Jan 2026
Answer :
Word Count : 412
The range of tolerance refers to the limits within which an organism can survive, grow, and reproduce in response to a particular environmental factor. In plant ecology, it explains how different species respond to variations in factors such as temperature, light, moisture, salinity, soil pH, and nutrients. This concept was clearly expressed by Shelford in his Law of Tolerance, which states that for each environmental factor there is a minimum, optimum, and maximum limit beyond which the organism cannot survive. For any given ecological factor, plants show a gradual response rather than an abrupt one. At the lower extreme lies the minimum limit, where survival becomes difficult and physiological activities are greatly reduced. At the
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