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.
Archaea
B.
Bacteria
C.
Dinoflagellates
D.
Viruses
E.
Forams
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.
Movement-detecting organs
C.
Specialized eyes
D.
Specialized jaws
E.
Light-producing organs
Question #4
The only marine mammals that are herbivorous are the:
A.
Leopard seals
B.
Sirenians
C.
Baleen whales
D.
Sea otters
E.
Walrus
Question #5
The planula is a:
A.
Planktonic mollusc
B.
Feeding structure
C.
Filter-feeding worm
D.
Defensive structure
E.
Larval form
Question #6
Which of the following does NOT apply to marine protozoa?
A.
Their name derives from "first animals"
B.
Some are heterotrophs
C.
Muticellular
D.
Are included among the Protista
E.
Some are autotrophs
Question #7
Which of the following are NOT correctly paired?
A.
Phylum Nematoda -- round worms
B.
Phylum Porifera -- sponges
C.
Phylum Cnidaria -- corals
D.
Phylum Nemertea -- ribbon worms
E.
Phylum Platyhelminthes -- beard worms
Question #8
Marine flowering plants include all of the following except:
A.
Surf grass
B.
Cord grass
C.
Seagrasses
D.
Mangroves
E.
Kelps
Question #9
Seaweeds differ from true plants because they:
A.
Lack true roots, leaves, and stems
B.
Are photosynthetic
C.
Have no chlorophyll
D.
Are prokaryotic
E.
Are unicellular
Question #10
Amongst cartilaginous fishes, extra buoyancy is provided by the:
A.
Liver
B.
Swim Bladder
C.
Gills
D.
Pectoral fin
E.
Mouth
Question #11
The stem-like structure of seaweeds such as kelp is called the:
A.
Stipe
B.
Pneumatocyst
C.
Thallus
D.
Holdfast
E.
Blade
Question #12
Agar is a natural product extracted from seaweeds and is used in/as a:
A.
Cosmetics
B.
Toothpaste
C.
Dental moulds
D.
Culture media
E.
All of the above
Question #13
Reproduction in diatoms is:
A.
By budding
B.
Asexual and sexual
C.
Only sexual
D.
By parthenogenesis
E.
Only asexual
Question #14
Which of the following are not protozoans?
A.
Amoebae
B.
Radiolarians
C.
Dinoflagellates
D.
Foraminiferans
E.
Ciliates
Question #15
Which of the following are NOT correctly paired?
A.
Class Holothuroidea -- sea cucumbers
B.
Class Asteroidea -- sea stars
C.
Class Ophiuroidea -- brittle stars
D.
Class Echinoidea -- feather stars
Question #16
Blubber is found in all of these marine mammals except:
A.
Sea lions
B.
Manatee
C.
Killer whale
D.
Seals
E.
Sea otter
Question #17
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 #18
Porpoises and dolphins are classified as belonging to the Order:
A.
Tetraceta
B.
Sirenia
C.
Carnivora
D.
Cetacea
E.
Pinnipedia
Question #19
Most cnidarians are specialized as:
A.
Carnivores
B.
Detritivores
C.
Filter feeders
D.
Plant-feeders
E.
Parasites
Question #20
Which of the following is an example of a jawless fish?
A.
Whale shark
B.
Skate
C.
Hagfish
D.
Ray
E.
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.
haploid, polyploid
C.
diploid, haploid
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.
Annelida, pseudocoelom
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.
air bladders, stolon
B.
flotsam, rooting-body
C.
neumatocysts, stipe
D.
pneumatocysts, holdfast
Question #24
__________ are the most common type of marine viruses, and are so named because they infect and kill __________ .
A.
Archaea, virons
B.
Prokaryotes, phytoplankton
C.
Prokayophages, bacteria
D.
Bacteriophages, bacteria
Question #25
Catadromus fishes spend nearly their entire lives in/the _____ except when they reproduce in/the _____.
A.
freshwater, ocean
B.
estuaries, ocean
C.
saltwater, lakes
D.
ocean, freshwater
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.
Phaeophyta, phaeophytin
C.
Chlorophyta, carotenoids
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.
phytoplankton, crustaceans
C.
small bait fish, large mackrel
D.
zooplankton, piscivory/eating fish
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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