Q.Differentiate Eurytherms and Stenotherms.

Eurytherms are wide temperature-tolerant organisms, while stenotherms are narrow temperature-tolerant organisms restricted to stable thermal habitats.

Temperature is one of the most important abiotic factors affecting the distribution and survival of organisms, and species differ greatly in their thermal tolerance range. Eurythermal organisms possess broad physiological/behavioural adaptations (such as efficient thermoregulation, insulation, or tolerance of cellular stress) that let them function over a wide span of temperatures, so they are typically widely distributed and can inhabit regions with pronounced seasonal or daily temperature swings - most terrestrial vertebrates and many insects, like cockroaches, are eurythermal. Stenothermal organisms, in contrast, have a narrow zone of thermal tolerance; their enzymes and physiological processes function properly only within a limited temperature band, so they are restricted to environments where temperature stays fairly constant, such as the deep ocean, polar se …