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Marine Mammals > Toothed Whales vs Baleen Whales > Flashcards

Toothed Whales vs Baleen Whales Flashcards

differences between the 2 whale groupings

1
Q

what are the 2 types of whales

A

baleen and toothed (mysticetes and odontocetes)

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2
Q

what is the other description for toothed whales

A

odontocetes

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3
Q

what is the other description for baleen whales

A

mysticetes

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4
Q

how many species of toothed whales are known

A

77 species

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5
Q

what is the largest species of toothed whales

A

sperm whale

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6
Q

how many species of baleen whales are known

A

15 species

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7
Q

which are generally larger: toothed or baleen whales

A

baleen whales

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8
Q

which grouping has the largest animal on earth

A

baleen whales

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9
Q

which baleen whale is the largest animal on earth

A

blue whale

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10
Q

average length and size of a blue whale

A

90-110 feet and 200,000 to 300,000 pounds

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11
Q

how many blowholes do toothed whales possess

A

one

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12
Q

how many blowholes do baleen whales possess

A

two

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13
Q

why are the blowholes of baleen whales different from those of toothed whales

A

two blowholes to breathe allows more oxygen efficiency to support their massive bodies underwater

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14
Q

which type of whales do not use echolocation

A

baleen

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15
Q

why do baleen whales not use echolocation

A

No need for the use of echolocation because they do not hunt their food as they are filter feeders

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16
Q

how do baleen whales communicate

A

Larynx produces sound. Air flowing past U-shaped vocal folds causes vibrations that are transferred through overlying throat tissue.

17
Q

do baleen whales use echolocation for communication

A

no

18
Q

how can baleen whales communicate without surfacing for air

A

Sounds can be made repetitively without surfacing for a breath due to air recycling between lungs and larynx

19
Q

which popular cetaceans are included in odontocetes/toothed whales

A

sperm whales, orcas, dolphins, porpoises

Marine Mammals (5 decks)

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