Most of the marine invertebrates are__________?
Correct answer: A. Osmoconformers
- A. Osmoconformers
- B. Osmoregulators
- C. Both depend upon the concentration of sea water
- D. None of these
Explanation
Most marine invertebrates are osmoconformers, meaning their internal osmotic concentration changes in close relation to that of seawater. The likely distractor is osmoregulators, which actively maintain a relatively constant internal osmotic concentration despite external changes.
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