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.
Forams
B.
Dinoflagellates
C.
Bacteria
D.
Archaea
E.
Viruses
Question #2
Sharks can reproduce by which of the following methods
A.
oviparity
B.
ovoviviparity
C.
viviparity
D.
none of the above
E.
all of the above
Question #3
In the deep-sea, many fish have photophores, which are:
A.
Specialized eyes
B.
Light-producing organs
C.
Specialized jaws
D.
Sex-regulating organs
E.
Movement-detecting organs
Question #4
The only marine mammals that are herbivorous are the:
A.
Sirenians
B.
Leopard seals
C.
Baleen whales
D.
Walrus
E.
Sea otters
Question #5
The planula is a:
A.
Planktonic mollusc
B.
Defensive structure
C.
Filter-feeding worm
D.
Feeding structure
E.
Larval form
Question #6
Which of the following does NOT apply to marine protozoa?
A.
Are included among the Protista
B.
Their name derives from "first animals"
C.
Muticellular
D.
Some are autotrophs
E.
Some are heterotrophs
Question #7
Which of the following are NOT correctly paired?
A.
Phylum Nematoda -- round worms
B.
Phylum Porifera -- sponges
C.
Phylum Nemertea -- ribbon worms
D.
Phylum Cnidaria -- corals
E.
Phylum Platyhelminthes -- beard worms
Question #8
Marine flowering plants include all of the following except:
A.
Seagrasses
B.
Surf grass
C.
Mangroves
D.
Kelps
E.
Cord grass
Question #9
Seaweeds differ from true plants because they:
A.
Are photosynthetic
B.
Lack true roots, leaves, and stems
C.
Are unicellular
D.
Are prokaryotic
E.
Have no chlorophyll
Question #10
Amongst cartilaginous fishes, extra buoyancy is provided by the:
A.
Liver
B.
Mouth
C.
Pectoral fin
D.
Gills
E.
Swim Bladder
Question #11
The stem-like structure of seaweeds such as kelp is called the:
A.
Thallus
B.
Blade
C.
Stipe
D.
Holdfast
E.
Pneumatocyst
Question #12
Agar is a natural product extracted from seaweeds and is used in/as a:
A.
Culture media
B.
Cosmetics
C.
Dental moulds
D.
Toothpaste
E.
All of the above
Question #13
Reproduction in diatoms is:
A.
Asexual and sexual
B.
Only sexual
C.
By budding
D.
Only asexual
E.
By parthenogenesis
Question #14
Which of the following are not protozoans?
A.
Radiolarians
B.
Dinoflagellates
C.
Ciliates
D.
Foraminiferans
E.
Amoebae
Question #15
Which of the following are NOT correctly paired?
A.
Class Ophiuroidea -- brittle stars
B.
Class Holothuroidea -- sea cucumbers
C.
Class Echinoidea -- feather stars
D.
Class Asteroidea -- sea stars
Question #16
Blubber is found in all of these marine mammals except:
A.
Sea otter
B.
Killer whale
C.
Manatee
D.
Seals
E.
Sea lions
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 winter and Mexican breeding grounds in summer
C.
Arctic feeding grounds in summer and Mexican breeding 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.
Cetacea
B.
Tetraceta
C.
Carnivora
D.
Sirenia
E.
Pinnipedia
Question #19
Most cnidarians are specialized as:
A.
Detritivores
B.
Parasites
C.
Filter feeders
D.
Carnivores
E.
Plant-feeders
Question #20
Which of the following is an example of a jawless fish?
A.
Shark
B.
Skate
C.
Hagfish
D.
Ray
E.
Whale shark
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.
diploid, haploid
C.
haploid, polyploid
D.
polyploid, diploid
Question #22
Roundworms belong to the Phylum __________ and have a partial body cavity called a __________.
A.
Nematoda, pseudocoelom
B.
Platyhelminthes, coelom
C.
Platyhelminthes, mesoderm
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.
pneumatocysts, holdfast
B.
air bladders, stolon
C.
flotsam, rooting-body
D.
neumatocysts, stipe
Question #24
__________ are the most common type of marine viruses, and are so named because they infect and kill __________ .
A.
Prokayophages, bacteria
B.
Bacteriophages, bacteria
C.
Prokaryotes, phytoplankton
D.
Archaea, virons
Question #25
Catadromus fishes spend nearly their entire lives in/the _____ except when they reproduce in/the _____.
A.
saltwater, lakes
B.
estuaries, ocean
C.
ocean, freshwater
D.
freshwater, ocean
Question #26
The external skeletons of foraminiferans are made of __________ , which sink and form __________ on the deep-sea floor
A.
gelatin, marine snow
B.
silica, reef carbonates
C.
calcium, dolomite
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.
Phaeophyta, phaeophytin
B.
Chlorophyta, chlorophyll
C.
Chlorophyta, carotenoids
D.
Rhodophyta, phycobilin
Question #28
Large bony fishes such as tunas, jacks, and cods feed on __________ as juveniles, but switch to __________ as adults.
A.
phytoplankton, crustaceans
B.
small bait fish, large mackrel
C.
algae, piscivory/eating fish
D.
zooplankton, piscivory/eating fish
Question #29
Patterns, shapes, and colors are used by fishes in many different ways, except in...?
A.
disruptive coloration
B.
mood
C.
they use all of these
D.
counter shading
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