[Campbell Biology P.1027] According to the text, what is the primary difference between steno... | Practice Question

According to the text, what is the primary difference between stenohaline and euryhaline animals?

  • A: Stenohaline animals are strictly osmoconformers, while euryhaline animals are strictly osmoregulators.
  • B: Stenohaline animals live exclusively in marine environments, while euryhaline animals are found only in freshwater.
  • C: Stenohaline animals cannot tolerate substantial changes in external osmolarity, whereas euryhaline animals can.
  • D: Euryhaline animals are only found in estuaries, while stenohaline animals are found everywhere else.

Explanation

The text explicitly states: 'Whether osmoconformers or osmoregulators, most animals cannot tolerate substantial changes in external osmolarity and are said to be stenohaline... In contrast, euryhaline animals... can survive large fluctuations in external osmolarity.'