Biology - Organisms and Populations Question with Solution | TestHub
Select the INCORRECT statement from the following with respect to osmoregulation.
Options:
Answer:
Solution:
Osmoconformers are organisms that maintain an internal environment which is isoosmotic to their external environment. Most marine invertebrates are osmoconformers.
Osmoregulators are organisms that actively regulate their osmotic pressure, independent of the external environment. Marine bony fishes are osmoregulators, but their body fluids are hypotonic to the surrounding seawater, not isoosmotic.
Therefore, the statement that marine organisms are mostly osmoregulators because their body fluids and external environment are isoosmotic is incorrect. If they are isoosmotic, they are osmoconformers.
Answer: Marine organisms are mostly osmoregulators because their body fluids and external environment are isoosmotic in nature.
