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.
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.
Specialized jaws
C.
Light-producing organs
D.
Movement-detecting organs
E.
Specialized eyes
Question #4
The only marine mammals that are herbivorous are the:
A.
Sirenians
B.
Leopard seals
C.
Baleen whales
D.
Sea otters
E.
Walrus
Question #5
The planula is a:
A.
Larval form
B.
Defensive structure
C.
Feeding structure
D.
Filter-feeding worm
E.
Planktonic mollusc
Question #6
Which of the following does NOT apply to marine protozoa?
A.
Muticellular
B.
Some are heterotrophs
C.
Some are autotrophs
D.
Are included among the Protista
E.
Their name derives from "first animals"
Question #7
Which of the following are NOT correctly paired?
A.
Phylum Porifera -- sponges
B.
Phylum Cnidaria -- corals
C.
Phylum Platyhelminthes -- beard worms
D.
Phylum Nematoda -- round worms
E.
Phylum Nemertea -- ribbon worms
Question #8
Marine flowering plants include all of the following except:
A.
Mangroves
B.
Cord grass
C.
Surf grass
D.
Seagrasses
E.
Kelps
Question #9
Seaweeds differ from true plants because they:
A.
Are photosynthetic
B.
Are unicellular
C.
Lack true roots, leaves, and stems
D.
Have no chlorophyll
E.
Are prokaryotic
Question #10
Amongst cartilaginous fishes, extra buoyancy is provided by the:
A.
Gills
B.
Swim Bladder
C.
Pectoral fin
D.
Mouth
E.
Liver
Question #11
The stem-like structure of seaweeds such as kelp is called the:
A.
Holdfast
B.
Thallus
C.
Stipe
D.
Pneumatocyst
E.
Blade
Question #12
Agar is a natural product extracted from seaweeds and is used in/as a:
A.
Toothpaste
B.
Culture media
C.
Dental moulds
D.
Cosmetics
E.
All of the above
Question #13
Reproduction in diatoms is:
A.
By parthenogenesis
B.
Asexual and sexual
C.
Only sexual
D.
Only asexual
E.
By budding
Question #14
Which of the following are not protozoans?
A.
Foraminiferans
B.
Radiolarians
C.
Ciliates
D.
Amoebae
E.
Dinoflagellates
Question #15
Which of the following are NOT correctly paired?
A.
Class Holothuroidea -- sea cucumbers
B.
Class Echinoidea -- feather stars
C.
Class Asteroidea -- sea stars
D.
Class Ophiuroidea -- brittle stars
Question #16
Blubber is found in all of these marine mammals except:
A.
Manatee
B.
Killer whale
C.
Sea lions
D.
Sea otter
E.
Seals
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.
Pinnipedia
B.
Cetacea
C.
Sirenia
D.
Tetraceta
E.
Carnivora
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.
Ray
B.
Shark
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.
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.
Platyhelminthes, mesoderm
B.
Nematoda, pseudocoelom
C.
Annelida, pseudocoelom
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.
neumatocysts, stipe
B.
pneumatocysts, holdfast
C.
air bladders, stolon
D.
flotsam, rooting-body
Question #24
__________ are the most common type of marine viruses, and are so named because they infect and kill __________ .
A.
Prokayophages, bacteria
B.
Archaea, virons
C.
Prokaryotes, phytoplankton
D.
Bacteriophages, bacteria
Question #25
Catadromus fishes spend nearly their entire lives in/the _____ except when they reproduce in/the _____.
A.
ocean, freshwater
B.
estuaries, ocean
C.
freshwater, ocean
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.
calcium carbonate, calcareous oozes
C.
gelatin, marine snow
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.
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.
phytoplankton, crustaceans
B.
algae, piscivory/eating fish
C.
zooplankton, piscivory/eating fish
D.
small bait fish, large mackrel
Question #29
Patterns, shapes, and colors are used by fishes in many different ways, except in...?
A.
they use all of these
B.
mood
C.
counter shading
D.
disruptive coloration
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