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.
Viruses
B.
Bacteria
C.
Forams
D.
Archaea
E.
Dinoflagellates
Question #2
Sharks can reproduce by which of the following methods
A.
viviparity
B.
ovoviviparity
C.
oviparity
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.
Light-producing organs
C.
Movement-detecting organs
D.
Specialized eyes
E.
Specialized jaws
Question #4
The only marine mammals that are herbivorous are the:
A.
Sirenians
B.
Walrus
C.
Leopard seals
D.
Sea otters
E.
Baleen whales
Question #5
The planula is a:
A.
Defensive structure
B.
Larval form
C.
Feeding structure
D.
Filter-feeding worm
E.
Planktonic mollusc
Question #6
Which of the following does NOT apply to marine protozoa?
A.
Their name derives from "first animals"
B.
Some are heterotrophs
C.
Some are autotrophs
D.
Muticellular
E.
Are included among the Protista
Question #7
Which of the following are NOT correctly paired?
A.
Phylum Nematoda -- round worms
B.
Phylum Platyhelminthes -- beard worms
C.
Phylum Nemertea -- ribbon worms
D.
Phylum Porifera -- sponges
E.
Phylum Cnidaria -- corals
Question #8
Marine flowering plants include all of the following except:
A.
Seagrasses
B.
Mangroves
C.
Surf grass
D.
Cord grass
E.
Kelps
Question #9
Seaweeds differ from true plants because they:
A.
Are photosynthetic
B.
Have no chlorophyll
C.
Are prokaryotic
D.
Are unicellular
E.
Lack true roots, leaves, and stems
Question #10
Amongst cartilaginous fishes, extra buoyancy is provided by the:
A.
Mouth
B.
Swim Bladder
C.
Gills
D.
Liver
E.
Pectoral fin
Question #11
The stem-like structure of seaweeds such as kelp is called the:
A.
Blade
B.
Holdfast
C.
Stipe
D.
Thallus
E.
Pneumatocyst
Question #12
Agar is a natural product extracted from seaweeds and is used in/as a:
A.
Toothpaste
B.
Cosmetics
C.
Dental moulds
D.
Culture media
E.
All of the above
Question #13
Reproduction in diatoms is:
A.
Asexual and sexual
B.
Only asexual
C.
By parthenogenesis
D.
By budding
E.
Only sexual
Question #14
Which of the following are not protozoans?
A.
Dinoflagellates
B.
Amoebae
C.
Ciliates
D.
Radiolarians
E.
Foraminiferans
Question #15
Which of the following are NOT correctly paired?
A.
Class Ophiuroidea -- brittle stars
B.
Class Echinoidea -- feather stars
C.
Class Holothuroidea -- sea cucumbers
D.
Class Asteroidea -- sea stars
Question #16
Blubber is found in all of these marine mammals except:
A.
Sea otter
B.
Seals
C.
Killer whale
D.
Sea lions
E.
Manatee
Question #17
Gray whales migrate every year between:
A.
Arctic feeding grounds in winter and Mexican breeding grounds in summer
B.
Arctic feeding grounds in summer and Mexican breeding grounds in winter
C.
Arctic breeding grounds in summer and Mexican feeding grounds in winter
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.
Tetraceta
B.
Carnivora
C.
Pinnipedia
D.
Cetacea
E.
Sirenia
Question #19
Most cnidarians are specialized as:
A.
Plant-feeders
B.
Detritivores
C.
Carnivores
D.
Parasites
E.
Filter feeders
Question #20
Which of the following is an example of a jawless fish?
A.
Shark
B.
Ray
C.
Hagfish
D.
Whale shark
E.
Skate
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.
polyploid, diploid
B.
diploid, haploid
C.
haploid, diploid
D.
haploid, polyploid
Question #22
Roundworms belong to the Phylum __________ and have a partial body cavity called a __________.
A.
Nematoda, pseudocoelom
B.
Platyhelminthes, mesoderm
C.
Platyhelminthes, coelom
D.
Annelida, pseudocoelom
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.
air bladders, stolon
C.
pneumatocysts, holdfast
D.
flotsam, rooting-body
Question #24
__________ are the most common type of marine viruses, and are so named because they infect and kill __________ .
A.
Bacteriophages, bacteria
B.
Archaea, virons
C.
Prokayophages, bacteria
D.
Prokaryotes, phytoplankton
Question #25
Catadromus fishes spend nearly their entire lives in/the _____ except when they reproduce in/the _____.
A.
freshwater, ocean
B.
saltwater, lakes
C.
ocean, freshwater
D.
estuaries, ocean
Question #26
The external skeletons of foraminiferans are made of __________ , which sink and form __________ on the deep-sea floor
A.
calcium carbonate, calcareous oozes
B.
gelatin, marine snow
C.
calcium, dolomite
D.
silica, reef carbonates
Question #27
The most ancient group of multicellular algae belongs to the division _____, which owe their distinctive color to the pigment _____.
A.
Rhodophyta, phycobilin
B.
Chlorophyta, carotenoids
C.
Phaeophyta, phaeophytin
D.
Chlorophyta, chlorophyll
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.
mood
B.
they use all of these
C.
disruptive coloration
D.
counter shading
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