Biol 15N Marine Biology » Winter 2020 » Exam 2
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Question #1
Which of the following organisms are often responsible for causing red tides?
A.
Bacteria
B.
Archaea
C.
Dinoflagellates
D.
Forams
E.
Viruses
Question #2
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 #3
In the deep-sea, many fish have photophores, which are:
A.
Sex-regulating organs
B.
Specialized eyes
C.
Light-producing organs
D.
Specialized jaws
E.
Movement-detecting organs
Question #4
The only marine mammals that are herbivorous are the:
A.
Sirenians
B.
Walrus
C.
Baleen whales
D.
Leopard seals
E.
Sea otters
Question #5
The planula is a:
A.
Feeding structure
B.
Larval form
C.
Planktonic mollusc
D.
Defensive structure
E.
Filter-feeding worm
Question #6
Which of the following does NOT apply to marine protozoa?
A.
Muticellular
B.
Are included among the Protista
C.
Some are heterotrophs
D.
Their name derives from "first animals"
E.
Some are autotrophs
Question #7
Which of the following are NOT correctly paired?
A.
Phylum Nemertea -- ribbon worms
B.
Phylum Nematoda -- round worms
C.
Phylum Cnidaria -- corals
D.
Phylum Platyhelminthes -- beard worms
E.
Phylum Porifera -- sponges
Question #8
Marine flowering plants include all of the following except:
A.
Surf grass
B.
Kelps
C.
Mangroves
D.
Cord grass
E.
Seagrasses
Question #9
Seaweeds differ from true plants because they:
A.
Are prokaryotic
B.
Are unicellular
C.
Are photosynthetic
D.
Lack true roots, leaves, and stems
E.
Have no chlorophyll
Question #10
Amongst cartilaginous fishes, extra buoyancy is provided by the:
A.
Gills
B.
Mouth
C.
Liver
D.
Pectoral fin
E.
Swim Bladder
Question #11
The stem-like structure of seaweeds such as kelp is called the:
A.
Stipe
B.
Blade
C.
Pneumatocyst
D.
Thallus
E.
Holdfast
Question #12
Agar is a natural product extracted from seaweeds and is used in/as a:
A.
Cosmetics
B.
Dental moulds
C.
Toothpaste
D.
Culture media
E.
All of the above
Question #13
Reproduction in diatoms is:
A.
By budding
B.
By parthenogenesis
C.
Only asexual
D.
Only sexual
E.
Asexual and sexual
Question #14
Which of the following are not protozoans?
A.
Dinoflagellates
B.
Ciliates
C.
Foraminiferans
D.
Amoebae
E.
Radiolarians
Question #15
Which of the following are NOT correctly paired?
A.
Class Asteroidea -- sea stars
B.
Class Ophiuroidea -- brittle stars
C.
Class Echinoidea -- feather stars
D.
Class Holothuroidea -- sea cucumbers
Question #16
Blubber is found in all of these marine mammals except:
A.
Manatee
B.
Sea lions
C.
Seals
D.
Killer whale
E.
Sea otter
Question #17
Gray whales migrate every year between:
A.
Arctic breeding grounds in summer and Mexican feeding grounds in winter
B.
Arctic feeding grounds in summer and Mexican breeding grounds in winter
C.
Arctic feeding grounds in winter and Mexican breeding grounds in summer
D.
Arctic breeding grounds in winter and Mexican feeding grounds in summer
Question #18
Porpoises and dolphins are classified as belonging to the Order:
A.
Pinnipedia
B.
Tetraceta
C.
Cetacea
D.
Carnivora
E.
Sirenia
Question #19
Most cnidarians are specialized as:
A.
Parasites
B.
Plant-feeders
C.
Filter feeders
D.
Carnivores
E.
Detritivores
Question #20
Which of the following is an example of a jawless fish?
A.
Shark
B.
Ray
C.
Skate
D.
Whale shark
E.
Hagfish
Question #21
Most multicellular marine algae reproduce using a process known as ‘alteration of generations’ in which there exists a separate _____ gametophyte and _____ sporophyte stage.
A.
haploid, diploid
B.
haploid, polyploid
C.
polyploid, diploid
D.
diploid, haploid
Question #22
Roundworms belong to the Phylum __________ and have a partial body cavity called a __________.
A.
Nematoda, pseudocoelom
B.
Annelida, pseudocoelom
C.
Platyhelminthes, coelom
D.
Platyhelminthes, mesoderm
Question #23
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.
neumatocysts, stipe
B.
flotsam, rooting-body
C.
air bladders, stolon
D.
pneumatocysts, holdfast
Question #24
__________ are the most common type of marine viruses, and are so named because they infect and kill __________ .
A.
Prokaryotes, phytoplankton
B.
Bacteriophages, bacteria
C.
Prokayophages, bacteria
D.
Archaea, virons
Question #25
Catadromus fishes spend nearly their entire lives in/the _____ except when they reproduce in/the _____.
A.
freshwater, ocean
B.
estuaries, ocean
C.
ocean, freshwater
D.
saltwater, lakes
Question #26
The external skeletons of foraminiferans are made of __________ , which sink and form __________ on the deep-sea floor
A.
calcium, dolomite
B.
silica, reef carbonates
C.
gelatin, marine snow
D.
calcium carbonate, calcareous oozes
Question #27
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.
Rhodophyta, phycobilin
D.
Chlorophyta, carotenoids
Question #28
Large bony fishes such as tunas, jacks, and cods feed on __________ as juveniles, but switch to __________ as adults.
A.
algae, piscivory/eating fish
B.
small bait fish, large mackrel
C.
zooplankton, piscivory/eating fish
D.
phytoplankton, crustaceans
Question #29
Patterns, shapes, and colors are used by fishes in many different ways, except in...?
A.
disruptive coloration
B.
counter shading
C.
they use all of these
D.
mood
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