Exam 2

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Question #1

Patterns, shapes, and colors are used by fishes in many different ways, except in…?

A counter shading

B disruptive coloration

C mood

D they use all of these

Question #2

Large bony fishes such as tunas, jacks, and cods feed on __________ as juveniles, but switch to __________ as adults.

A algae, piscivory/eating fish

B zooplankton, piscivory/eating fish

C small bait fish, large mackrel

D phytoplankton, crustaceans

Question #3

The most ancient group of multicellular algae belongs to the division _____, which owe their distinctive color to the pigment _____.

A Chlorophyta, chlorophyll

B Phaeophyta, phaeophytin

C Chlorophyta, carotenoids

D Rhodophyta, phycobilin

Question #4

The external skeletons of foraminiferans are made of __________ , which sink and form __________ on the deep-sea floor

A gelatin, marine snow

B calcium carbonate, calcareous oozes

C calcium, dolomite

D silica, reef carbonates

Question #5

Catadromus fishes spend nearly their entire lives in/the _____ except when they reproduce in/the _____.

A ocean, freshwater

B saltwater, lakes

C freshwater, ocean

D estuaries, ocean

Question #6

__________ are the most common type of marine viruses, and are so named because they infect and kill __________ .

A Prokaryotes, phytoplankton

B Bacteriophages, bacteria

C Archaea, virons

D Prokayophages, bacteria

Question #7

Brown seaweeds, such as kelps, have gas-filled ‘floats’ called __________ for maximizing their exposure to the sun, and attach themselves to hard-bottom substrates with a __________ .

A pneumatocysts, holdfast

B neumatocysts, stipe

C flotsam, rooting-body

D air bladders, stolon

Question #8

Roundworms belong to the Phylum __________ and have a partial body cavity called a __________.

A Platyhelminthes, mesoderm

B Nematoda, pseudocoelom

C Annelida, pseudocoelom

D Platyhelminthes, coelom

Question #9

Most multicellular marine algae reproduce using a process known as ‘alteration of generations’ in which there exists a separate _____ gametophyte and _____ sporophyte stage.

A polyploid, diploid

B diploid, haploid

C haploid, polyploid

D haploid, diploid

Question #10

Which of the following is an example of a jawless fish?

A Skate

B Shark

C Whale shark

D Ray

E Hagfish

Question #11

Most cnidarians are specialized as:

A Parasites

B Plant-feeders

C Detritivores

D Carnivores

E Filter feeders

Question #12

Porpoises and dolphins are classified as belonging to the Order:

A Tetraceta

B Cetacea

C Carnivora

D Sirenia

E Pinnipedia

Question #13

Gray whales migrate every year between:

A Arctic feeding grounds in summer and Mexican breeding grounds in winter

B Arctic breeding grounds in winter and Mexican feeding grounds in summer

C Arctic breeding grounds in summer and Mexican feeding grounds in winter

D Arctic feeding grounds in winter and Mexican breeding grounds in summer

Question #14

Blubber is found in all of these marine mammals except:

A Sea lions

B Seals

C Killer whale

D Sea otter

E Manatee

Question #15

Which of the following are NOT correctly paired?

A Class Asteroidea — sea stars

B Class Holothuroidea — sea cucumbers

C Class Ophiuroidea — brittle stars

D Class Echinoidea — feather stars

Question #16

Which of the following are not protozoans?

A Dinoflagellates

B Foraminiferans

C Amoebae

D Radiolarians

E Ciliates

Question #17

Reproduction in diatoms is:

A Only sexual

B By parthenogenesis

C Asexual and sexual

D By budding

E Only asexual

Question #18

Agar is a natural product extracted from seaweeds and is used in/as a:

A Dental moulds

B Cosmetics

C Toothpaste

D Culture media

E All of the above

Question #19

The stem-like structure of seaweeds such as kelp is called the:

A Pneumatocyst

B Thallus

C Stipe

D Blade

E Holdfast

Question #20

Amongst cartilaginous fishes, extra buoyancy is provided by the:

A Pectoral fin

B Mouth

C Swim Bladder

D Gills

E Liver

Question #21

Seaweeds differ from true plants because they:

A Lack true roots, leaves, and stems

B Are unicellular

C Are photosynthetic

D Have no chlorophyll

E Are prokaryotic

Question #22

Marine flowering plants include all of the following except:

A Surf grass

B Kelps

C Cord grass

D Seagrasses

E Mangroves

Question #23

Which of the following are NOT correctly paired?

A Phylum Cnidaria — corals

B Phylum Nemertea — ribbon worms

C Phylum Nematoda — round worms

D Phylum Platyhelminthes — beard worms

E Phylum Porifera — sponges

Question #24

Which of the following does NOT apply to marine protozoa?

A Their name derives from “first animals”

B Are included among the Protista

C Some are heterotrophs

D Some are autotrophs

E Muticellular

Question #25

The planula is a:

A Planktonic mollusc

B Feeding structure

C Defensive structure

D Filter-feeding worm

E Larval form

Question #26

The only marine mammals that are herbivorous are the:

A Walrus

B Sea otters

C Sirenians

D Baleen whales

E Leopard seals

Question #27

In the deep-sea, many fish have photophores, which are:

A Specialized eyes

B Light-producing organs

C Specialized jaws

D Movement-detecting organs

E Sex-regulating organs

Question #28

Sharks can reproduce by which of the following methods

A viviparity

B oviparity

C ovoviviparity

D none of the above

E all of the above

Question #29

Which of the following organisms are often responsible for causing red tides?

A Forams

B Archaea

C Dinoflagellates

D Bacteria

E Viruses

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