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.
Viruses
D.
Bacteria
E.
Archaea
Question #2
Sharks can reproduce by which of the following methods
A.
ovoviviparity
B.
viviparity
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.
Specialized eyes
C.
Specialized jaws
D.
Movement-detecting organs
E.
Light-producing organs
Question #4
The only marine mammals that are herbivorous are the:
A.
Sea otters
B.
Leopard seals
C.
Walrus
D.
Baleen whales
E.
Sirenians
Question #5
The planula is a:
A.
Filter-feeding worm
B.
Defensive structure
C.
Larval form
D.
Planktonic mollusc
E.
Feeding structure
Question #6
Which of the following does NOT apply to marine protozoa?
A.
Are included among the Protista
B.
Some are heterotrophs
C.
Some are autotrophs
D.
Their name derives from "first animals"
E.
Muticellular
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 Porifera -- sponges
E.
Phylum Platyhelminthes -- beard worms
Question #8
Marine flowering plants include all of the following except:
A.
Kelps
B.
Cord grass
C.
Surf grass
D.
Seagrasses
E.
Mangroves
Question #9
Seaweeds differ from true plants because they:
A.
Are prokaryotic
B.
Have no chlorophyll
C.
Are unicellular
D.
Lack true roots, leaves, and stems
E.
Are photosynthetic
Question #10
Amongst cartilaginous fishes, extra buoyancy is provided by the:
A.
Swim Bladder
B.
Gills
C.
Pectoral fin
D.
Mouth
E.
Liver
Question #11
The stem-like structure of seaweeds such as kelp is called the:
A.
Pneumatocyst
B.
Holdfast
C.
Blade
D.
Thallus
E.
Stipe
Question #12
Agar is a natural product extracted from seaweeds and is used in/as a:
A.
Culture media
B.
Toothpaste
C.
Dental moulds
D.
Cosmetics
E.
All of the above
Question #13
Reproduction in diatoms is:
A.
By budding
B.
Asexual and sexual
C.
Only asexual
D.
By parthenogenesis
E.
Only sexual
Question #14
Which of the following are not protozoans?
A.
Dinoflagellates
B.
Radiolarians
C.
Foraminiferans
D.
Ciliates
E.
Amoebae
Question #15
Which of the following are NOT correctly paired?
A.
Class Holothuroidea -- sea cucumbers
B.
Class Asteroidea -- sea stars
C.
Class Echinoidea -- feather stars
D.
Class Ophiuroidea -- brittle stars
Question #16
Blubber is found in all of these marine mammals except:
A.
Killer whale
B.
Sea lions
C.
Sea otter
D.
Seals
E.
Manatee
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 feeding grounds in winter and Mexican breeding grounds in summer
D.
Arctic breeding grounds in summer and Mexican feeding grounds in winter
Question #18
Porpoises and dolphins are classified as belonging to the Order:
A.
Sirenia
B.
Cetacea
C.
Carnivora
D.
Pinnipedia
E.
Tetraceta
Question #19
Most cnidarians are specialized as:
A.
Carnivores
B.
Plant-feeders
C.
Parasites
D.
Detritivores
E.
Filter feeders
Question #20
Which of the following is an example of a jawless fish?
A.
Whale shark
B.
Ray
C.
Skate
D.
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.
polyploid, diploid
B.
haploid, diploid
C.
diploid, haploid
D.
haploid, polyploid
Question #22
Roundworms belong to the Phylum __________ and have a partial body cavity called a __________.
A.
Annelida, pseudocoelom
B.
Nematoda, pseudocoelom
C.
Platyhelminthes, mesoderm
D.
Platyhelminthes, coelom
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.
pneumatocysts, holdfast
C.
neumatocysts, stipe
D.
flotsam, rooting-body
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.
ocean, freshwater
B.
freshwater, ocean
C.
saltwater, lakes
D.
estuaries, ocean
Question #26
The external skeletons of foraminiferans are made of __________ , which sink and form __________ on the deep-sea floor
A.
silica, reef carbonates
B.
calcium carbonate, calcareous oozes
C.
calcium, dolomite
D.
gelatin, marine snow
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.
Chlorophyta, carotenoids
C.
Phaeophyta, phaeophytin
D.
Rhodophyta, phycobilin
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.
disruptive coloration
B.
mood
C.
counter shading
D.
they use all of these
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