All of the following are adaptations against excessive water and salt exchange between animals and their surrounding environment except:
A) having very permeable tissues.
B) covering body with mucus.
C) living inside a tube that can be isolated from the external environment.
D) covering the body with a hard exoskeleton.
E) actively absorbing salt ions with gills.

Question

Quizplus · Accepted Answer

Having very permeable tissues would actually make an animal more susceptible to excessive water and salt exchange, and is not an adaptation against it. The other choices provide some degree of protection or isolation against the external environment.

All of the Following Are Adaptations Against Excessive Water and Salt