Aquatic animals breathe at a slower rate than the terrestrial animals.

The answer is false.

No, Aquatic doesn't breathe slower than terrestrial animal. 

Since aquatic organisms take oxygen from water, water has very small amount of oxygen dissolved in it as compared to the amount of oxygen present in the air. As a result, aquatic organisms breathe faster than terrestrial organisms in order to obtain more oxygen.

The correct statement is that the aquatic animals breathe faster than the terrestrial animals.