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23 Cards in this Set

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Are mammals cold-blooded or warm-blooded?
All mammals are warm-blooded.
Are mammals vertebrates or invertebrates?
Mammals are vertebrates.
In what 6 ways are all mammals alike?
1. vertebrates
2. warm-blooded
3. some hair or fur
4. breath air with lungs
5. born alive
6. produce milk to feed
young
Thick layers of fat called
--- keep wales warm.
blubber
Some whales have bony plates, or ----, in their mouths.
beleen
Some whales have baleen, or bony plates, which --- food from the sea.
filters
Baleen whales feed only on tiny ---.
plankton
Most whales are ---.
toothed
Killer whales travel in groups called ---.
pods
In what type of water do most whales live in?
salt water
What are the largest animals that have ever lived?
Blue whales
What do blue whales eat?
plankton
Whales have a good sense of
---.
hearing
Dolphins and porpoises are
--- whales.
toothed
How can you tell the difference between a dolphin and a porpoise?
A dolphin has a beakline snout and a porpoise have rounded snouts.
Which are larger, dolphins or porpoises?
dolphins
How do dolphins and porpoises communicate?
They communicate with each other by making chirping sounds. They hear sounds through the process of echo-location.
What adaptations do seals have to stay warm in cold water?
1.Sleek, fur-covered bodies
2. layer of blubber
3. spread oil over their
fur to make it
waterproof
In what ways are seals grouped?
Seals are grouped by the type of ears they have: eared or earless
In what 3 ways do walruses use their tusks?
1. pull themselves out of
the water and onto the
ice
2. when underwater, to
break a hole in the ice
to breathe
3. to defend themselves
against enemies
Both male and female walruses have ---.
tusks
Every animal has adaptations that help it live in its ---.
environment
Where do walruses live?
Walruses live in the icy Arctic Ocean.