Final part 2

Question 1

Seals, sea lions and walruses are of order? Eat what?

Answer 1

Pinnipedia

Mostly fish, squid, crustaceans, mollusks

Question 2

Their blubber act as an

Answer 2

insulator and food reserve, while providing buoyancy

Question 3

Bristly hair for additional

Answer 3

insulation (traps air)

Question 4

Seals have _ flippers that cannot be moved forward. They pull themselves with _ flippers and swim with powerful strokes of _ flippers.

Answer 4

rear; front; rear

Question 5

Sea Lions have ears with flaps while seals have _. Their skin is covered and they have _ claws, while seals have fur and _ claws.
Their _ _ can allow “walking” on land. But in seals, they can’t _ under body, so they _ on land.

Answer 5

earholes; short; long; hind flippers; rotate; scoot

Question 6

Types of seals

Answer 6

ringed, ribbon, harbor, northern fur, leopard, entangled fur

Question 7

Sea lions can swim with and move their front flippers forward and they can be _ backward to _ _.

Answer 7

rotated; support body

Question 8

Because sea otters have no fur, air is _ in dense _ for insulation.
Walruses use stiff _ as _ on the bottom.

Answer 8

trapped; fur; whiskers; feelers

Question 9

Whales, dolphins and porpoises are of order

Answer 9

Cetacea; largest group of marine mammals

Warm blooded, have hair and produce milk

Question 10

Two groups of cetaceans
Toothed whales have _ teeth in their jaws, and a _ blowhole.
Baleen whales have baleen (a _ _ substance, keratin) _ from upper jaw bone. (Filter _ or small _). They have _ _.

Answer 10

toothless and toothed; single; stiff hornlike; plankton; nekton; two blowholes

Question 11

How do Baleen whales feed?

Answer 11

they fill mouth and throat, close mouth forcing water through baleen retaining prey; skimmers at surface

Question 12

Deep diving adaptations for sperm whale

Answer 12

Spermaceti (regulate buoyancy)
Nitrogen enters trachea, prevent “the bends”
bradycardia
More rbc/unit of blood promotes greater oxygen carrying capacity
Shunting of blood to brain and essential organs when O2 becomes low
Lots of myoglobin in muscles
Large triangular tail flukes increase surface area for propulsion

Question 13

Breach

Answer 13

Spectacular leap, crash into water to communicate to others

Question 14

Lobtailing

Answer 14

head down, flukes pounding surface for warning or mating

Question 15

Spyhopping

Answer 15

Tail down, rears head out of water to look where the coast is at

Question 16

Dolphins have _ and conical teeth. They have _ or _ dorsal fins. Males travel in _ pods while females in _ pods. Family _

Answer 16

beaks; hooked or curved; small; larger; Delphinidae

Question 17

Porpoises

Answer 17

no beaks; spade-shaped teeth; triangle shaped dorsal fin;

traveling by ones and twos