If you rub the scaled skin of a shark,it feels rough if you move your hand from tail to head but smooth if you move from head to tail.What is a major advantage of the scales being oriented this way?
A)to counteract friction as the shark swims through the water
B)to keep the shark afloat in the water
C)to better protect the shark from predators
D)to better prevent water loss from the body tissues
E)to enable the shark to orient itself in space and detect prey

Question

Quizplus · Accepted Answer

The orientation of the scales allows for the shark to swim more efficiently through the water by reducing friction. Moving from tail to head allows for the scales to lie flat against the skin, reducing drag and making swimming easier.

If You Rub the Scaled Skin of a Shark,it Feels