AP BIOLOGY

Detailed explanation-1: -Like its fins and sense organs, the shark’s mouth is a highly effective physiological adaptation, perfectly suited to its job. There are two elements that make the mouth so effective: the teeth and the jaws. Shark teeth are something like the teeth of land predators. They have very sharp points that will cut into meat.

Detailed explanation-2: -Rather than bone, sharks have cartilage, which is much lighter and more flexible. In addition, their livers produce squalene, a fatty oil that helps them remain afloat. Their pectoral fins allow them to quickly change direction, dive and swim upward.

Detailed explanation-3: -Their fins have special shapes and sizes that allow them to move quickly through the water. The caudal fin of sharks, which is similar to the tail in other animals, has a special shape. The top of this V-shaped fin is larger than the bottom, which allows sharks to swim more efficiently.

Detailed explanation-4: -Sharks don’t actually regrow teeth one by one but have multiple rows inside their jaw that are constantly regrown. When a tooth on the edge of the jaw drops out, the corresponding tooth in the row behind it moves forward to replace it. The underlying soft tissues anchor and carry each tooth like a conveyor belt.