Oceanography chp. 14
What is the harbor seal controversy at Children's Pool in La Jolla California about?
Do harbor seals have the right to use the beach at Children's Pool?
Because the area has not yet been designated as a marine sanctuary, lifeguards are allowed to do what so that people can use the beach?
chase the harbor seals off the beach
Of the following adaptations, which is/are used by various pelagic organisms to keep them from sinking?
everything but -expansion and contraction
Of the following characteristics, which is/are true of marine mammals of order Sirenia?
everything but -their ancestors..
Which side of the baleen faces inside the mouth on a living whale?
fibrous
gray whale
Order Cetacea, Suborder Mysticeti
goatfish
forked
herring
forked
All the following are baleen whales except :
sperm whales
Which of the following is not a member of the Order Carnivora?
sperm whales
Identify the adaptation that allows deep-sea fishes to capture prey without exerting much energy.
senstitive
One of the prey items of baleen whales are krill. What are krill?
shrimplike
What evidence exists that harbor seals have always been in the area?
The existence of a rock offshore known as Seal Rock.
The migratory routes of many commercially important baleen whales are poorly known.
F
Of the following statements about schooling, which is/are true?
3 -cruising predator -more than half.. -dangerous fish
How does sonar work?
A sound signal is bounced off the ocean floor.
whales
B bottlenose dolphin C sperm whale D blue whale A northern
sea lion vs. seal
B seal A sea lion
whales 2
C killer A narwhal D gray B humpback
fish shown below, match the correct letter to each of the following features.
C pectoral fin B spiny dorsal fin E gill A soft dorsal D caudal
whale 3
D monkey muzzle A blowhole B frontal air sac D distal air sac
A. copepods B. foraminiferans C. krill D. radiolarians E. squid.
E squid
A. anal B. caudal C. dorsal D. pelvic E. ventral
E ventral
How are echolocation and sonar different?
Echolocation is used by dolphins and whales, whereas sonar is a data collection tool developed by people
One adaptation for deep diving in marine mammals is an increase in heart rate during the dive.
F
Sharks have lunate caudal fins.
F
Strategies for staying afloat in pelagic environments include a swim bladder, increased body fat and increased body density.
F
The Odontoceti or toothed whales include the humpback, the gray, and the sperm whales.
F
What is the main opposition of having harbor seals at Children's Pool in La Jolla?
Harbor seals defecate in the water, producing high levels of bacteria in the water offshore.
Krill, cnidarians, and arrow worms are macroscopic zooplankton.
T
Many cetaceans can extract almost 90% of the oxygen from each breath.
T
Photophores are cells found in bioluminescent organisms that may contain bioluminescent bacteria and the pigment luciferin.
T
Red muscle tissue is abundant in cruisers, while white muscle tissue is abundant in lungers.
T
We currently believe that all marine mammals evolved from land-dwelling mammals.
T
What does a dolphin's melon do?
The melon focuses sound waves during emission.
How do gray whales collect and eat such small organisms?
They use their baleen to filter prey items from their environment.
Why was the seawall constructed in La Jolla?
To create a quiet beach behind the seawall that is free of large waves so that children can safely use the beach.
All the following are adaptations to staying above the ocean floor except :
all
Which set of fins is used as stabilizers?
anal/dorsal
Which of the following is an example of commensalism?
barnacles
Where do dolphins generate sounds for use in echolocation?
blowhole
Where do amphipods live?
bottom mud
Plates of baleen resemble what common household item?
broom
fur seal
carnivora
walrus
carnivora
Which fin(s) is/are most commonly used for moving fast?
caudal
Microscopic, shrimplike animals that have a hard exoskeleton that can be either herbivorous, carnivorous, or parasitic are called:
copepods
What does sonar data tell us about the seafloor?
depth, shape, and composition
Because of the scarcity of food in the deep-sea environment, many organisms rely on _________ as their principal source of food.
detritus
Sea lions are easily distinguished from seals because they:
ears
Of the following statements about the characteristics of marine mammals, which is/are true?
everything but -ashore to give birth
Of the following groups of organisms, which is/are considered zooplankton?
everything but -diatoms
The caudal fin shape that is asymmetrical, with most of the mass in the upper lobe, is a:
heterocercal
tiger shark
heterocercal
Fossil evidence indicates that modern whales have evolved from ancestors similar to the _
hippo
sea otter
is a small mammal with dense fur and lack an insulating blubber layer.
Individual fishes within schools maintain their spacing through visual contact and
lateral line system
The cultural tradition and government-ordered capture of pilot whales for food by Faroe Islanders in the North Atlantic is deemed __________.
legal aboriginal..
What type of caudal fin is characteristic of fast-swimming fish that migrate long distances?
lunate
blue marlin
lunate
bluefin tuna
lunate
The oxygen-storing compound in the red muscle tissue of fishes is called
myoglobin
A group of animals that "violates" the trophic pyramid by feeding on organisms two or three levels below it is the _________.
mysteceti or baleen whales
The stinging cells used by cnidarians to capture prey are called
nematocysts
bottlenose dolphin
order cetacea, suborder odontoceli
killer whale
order cetacea, suborder odontoceli
sperm whale
order cetacea, suborder odontoceli
Cruisers are thought to have relatively high body temperature because:
power output
founder
rounded
The most sophisticated use of sound by marine mammals is found in the _________.
toothed whales
gray angel fish
truncate
salmon
truncate
An example of a "cruiser" is a:
tuna
Bioluminescence is employed by deep-sea animals for all the following reasons except:
warning coloration
The muscle tissue of a "lunger" is predominantly:
white