Cetacea Notes CFU

Any member of the group of marine mammals which includes whales, dolphins, and porpoises.

• sirenia

• carnivora

• cetancea

A term used to describe the action of when whales lift their head straight out of the water ___.

• slapping

• spyhopping

• breaching

What do baleen whales have two of, that toothed whales have only one of?

• bladders

• blowholes

• set of eyes

Which is true of Odontocetes?

• Also known as toothed whales like narwhals, belguga, orca, sperm whales.

• Also known as baleen whales like gray whales, humpbacks and blue whales

• Two blowholes

Which is true of Mysticetes

• The largest aquatic mammals

• One blowhole

• dolphins and porpoises

What is the main way to distinguish between porpoise and a dolphin?

• body markings

• where they live

• shape of teeth

What part of the body is used for directing outgoing sound waves during echolocation?

• Melon

• Lower jaw

• Nasal plug

True/False.

Cetaceans have a diving adaptation that allows their muscles to tolerate more lactic acid without ill effects on the body.

• True

• False