Q. Which of the following options is correct ?
Stenothermal organism Eurythermal organism
(a) Frog Lizard
(b) Frog Man
(c) Man Lizard
(d) Polar bear Coconut tree

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Solution:

Organisms with narrow range of temperature tolerance are called stenothermal organisms, e.g., polar bear, frog, lizards, coconut, etc. The organisms with wide range of temperature tolerance are called eurythermal organisms e.g., most mammals and birds.