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Organisms and Populations — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYOrganisms and Populations2 Marks
Question
Shark is eurythermal while polar bear is stenothermal. What is the advantage the former has and what is the constraint the later has?
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Answer

A few organisms can tolerate and thrive in wide range of temperature (they are called eurythermal), but a vast majority of them are restricted to narrow range of temperatures (such organisms are called stenothermal). The levels of thermal tolerance of different species determine to a large extent their geographical distribution.

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