Marine Mammal

How much oxygen can cetaceans extract from each breath due to their alveolar structure?

• 50%

• 70%

• 90%

• 100%

What is the primary function of echolocation in the suborder Odontoceti?

• To produce oxygen

• To navigate and hunt in dark or murky waters

• To communicate with other species

• To sleep underwater

What is a distinguishing feature of porpoises compared to dolphins regarding their body shape?

• Longer, streamlined body

• Smaller, more stout body shape

• Larger, more elongated body

• Identical to dolphins

What type of snout do porpoises have?

• Pointed snout

• Blunt snout

• Beak-like snout

• No distinct snout

Tags

NGSS.MS-LS4-2

What type of teeth do porpoises have?

• Sharp and pointed

• Blunt or flat

• Varied in size

• No teeth

Which suborder do baleen whales belong to according to the Order Cetacea?

• Odontoceti

• Mysticeti

• Architeuthis

• Delphinidae

What is a characteristic feature of baleen whales?

• Echolocation

• Fibrous plates of baleen to sieve prey items

• Blubber layer for insulation

• Ability to leap out of water

Which whale species are identified as the most critically endangered in the world?

• Gray whales

• North Atlantic right whales

• North Pacific right whales

• South Atlantic right whales

What class do Marine Mammals belong to?

• Animalia

• Mammalia

• Vertebrata

• Chordata

What type of evolution have marine mammals gone through in order to give them streamline bodies and paddle like limbs like those of fish? (Remember, their ancestors lived on land and moved back into the water. They look "fish-like" because they evolved in the same place - not necessarily because they are related.)

• Side-line Evolution

• Divergent Evolution

• Convergent Evolution

• Affected Evolution

Tags

NGSS.MS-LS4-2