oceanography ch. 14

Which of the following statements regarding sea otters is correct?

They are one of the few types of animals known to use tools.

Jellies are an example of which of the following?

Cnidarians

Which of the following types of caudal fins is asymmetrical, with most of their mass and surface area in the upper lobe

Heterocercal caudal fin

Which of the following is not an adaptation of deep-sea fishes?

Large body sizes

Which of the following best describes a behavior known as porpoising?

Leaping out of the water while swimming

Isopods attaching itself to a fish and derive its nutrition from the body fluids of the fish, robbing it of some of its energy supply, is an example of which of the following types of symbiotic relationship?

Parasitism

Which of the following is the most important function of schooling in small fish?

Protection from predators

Which of the following is not a member of the Order Carnivora?

Sperm whales

Which of the following allows cetaceans to remain submerged for extended periods of time?

They can extract almost 90% of the oxygen in each breath.

Which of the following statements regarding polar bears is correct?

They have massive webbed paws that make them excellent swimmers.

Which of the following is not a characteristic of Class Mammalia?

They lay eggs.

Squid swim by expelling water out a siphon to propel themselves ________.

backward

Most high-speed fish use their caudal fins ________.

for swim propulsion

Red muscle tissue in fish supplies a much ________ amount of oxygen and supports a much ________ metabolic rate than white tissue.

greater; higher

Sea lions are easily distinguished from seals because they ________. Correct!

have external ears

In dolphins and porpoises, an organ called the ________ focuses on the sounds they generate.

melon

Squids, fish, sea turtles, and marine mammals are examples of ________ organisms. Correct!

nektonic

Which set of fins is used for turning and braking?

pectoral and pelvic

The function of a swim bladder is ________.

to allow a fish to change position in the water column.

The muscle tissue of a "lunger" is predominantly ________.

white