Marine Biology Exam 2 UPDATED Exam
Questions and CORRECT Answers
Sponges live a(n) ____ lifestyle - CORRECT ANSWER - sessile
Water exits the sponge spongocoel through the - CORRECT ANSWER - osculum
Sponges can have skeletons made of all these materials - CORRECT ANSWER - silica,
calcium carbonate, spongin
Reproduction in sponges includes - CORRECT ANSWER - budding, sexual,
fragmentation
The Cnidarians possess - CORRECT ANSWER - stinging cells
Jellyfish and box jellyfish are - CORRECT ANSWER - Scyphozoans
The Portuguese man-o-war is a member of the class - CORRECT ANSWER - Hydrozoa
.The cnidarians have an incomplete gut (having only one opening) called the - CORRECT
ANSWER - gastrovascular cavity
Clown fishes form symbiotic relationships with members of this group of cnidarians -
CORRECT ANSWER - anthozoans
You are walking along the beach and see the remains of an unknown animal washed up on shore.
You examine its characteristics and see that it is gelatinous, transparent, bilaterally symmetric,
and lacks tentacles. You provisionally identify its phylum according to which choice? -
CORRECT ANSWER - lack of tentacles rules of cnidaria
,Flatworms can reproduce - CORRECT ANSWER - asexually, sexually and by reciprocal
copulation
All of the following have bilateral symmetry except:
Nemertea.
Phoronids.
Ctenophora
Platyhelminthes. - CORRECT ANSWER - Ctenophora
The primary feeding type for lophophorates is - CORRECT ANSWER - filter feeders
Which is not a lophophorate?
a.
Phoronida
b.
Ectoprocta
c.
Brachiopods
d.
Flukes & tapeworms - CORRECT ANSWER - Flukes and tapeworms
Porifera have what type of symmetry? - CORRECT ANSWER - asymmetrical
Ctenophora have what type of symmetry? - CORRECT ANSWER - radial
Platyhelminthes have what type of symmetry? - CORRECT ANSWER - bilateral
symmetry
, which phylum is characterized by comb plates - CORRECT ANSWER - Ctenophora
which phylum is characterized by being filter feeders - CORRECT ANSWER - Porifera
which phylum is characterized by being reef forming - CORRECT ANSWER - Cnidaria
which ecological role does Porifera have - CORRECT ANSWER - filter feeders
what ecological role do Nemertea have - CORRECT ANSWER - carnivores on benthic
plankton
what ecological role do Ctenophora have - CORRECT ANSWER - carnivores on
zooplankton
What class of cnidarians have a polyp stage only? - CORRECT ANSWER - Anthozoans
what class of cnidarians have medusa stage only - CORRECT ANSWER - scyphozoan
what class of cnidarians have both a medusa and polyp stage - CORRECT ANSWER -
hydrozoan
medusa - CORRECT ANSWER - free floating larval and adult form
polyp - CORRECT ANSWER - attached form
planula - CORRECT ANSWER - larval form
Questions and CORRECT Answers
Sponges live a(n) ____ lifestyle - CORRECT ANSWER - sessile
Water exits the sponge spongocoel through the - CORRECT ANSWER - osculum
Sponges can have skeletons made of all these materials - CORRECT ANSWER - silica,
calcium carbonate, spongin
Reproduction in sponges includes - CORRECT ANSWER - budding, sexual,
fragmentation
The Cnidarians possess - CORRECT ANSWER - stinging cells
Jellyfish and box jellyfish are - CORRECT ANSWER - Scyphozoans
The Portuguese man-o-war is a member of the class - CORRECT ANSWER - Hydrozoa
.The cnidarians have an incomplete gut (having only one opening) called the - CORRECT
ANSWER - gastrovascular cavity
Clown fishes form symbiotic relationships with members of this group of cnidarians -
CORRECT ANSWER - anthozoans
You are walking along the beach and see the remains of an unknown animal washed up on shore.
You examine its characteristics and see that it is gelatinous, transparent, bilaterally symmetric,
and lacks tentacles. You provisionally identify its phylum according to which choice? -
CORRECT ANSWER - lack of tentacles rules of cnidaria
,Flatworms can reproduce - CORRECT ANSWER - asexually, sexually and by reciprocal
copulation
All of the following have bilateral symmetry except:
Nemertea.
Phoronids.
Ctenophora
Platyhelminthes. - CORRECT ANSWER - Ctenophora
The primary feeding type for lophophorates is - CORRECT ANSWER - filter feeders
Which is not a lophophorate?
a.
Phoronida
b.
Ectoprocta
c.
Brachiopods
d.
Flukes & tapeworms - CORRECT ANSWER - Flukes and tapeworms
Porifera have what type of symmetry? - CORRECT ANSWER - asymmetrical
Ctenophora have what type of symmetry? - CORRECT ANSWER - radial
Platyhelminthes have what type of symmetry? - CORRECT ANSWER - bilateral
symmetry
, which phylum is characterized by comb plates - CORRECT ANSWER - Ctenophora
which phylum is characterized by being filter feeders - CORRECT ANSWER - Porifera
which phylum is characterized by being reef forming - CORRECT ANSWER - Cnidaria
which ecological role does Porifera have - CORRECT ANSWER - filter feeders
what ecological role do Nemertea have - CORRECT ANSWER - carnivores on benthic
plankton
what ecological role do Ctenophora have - CORRECT ANSWER - carnivores on
zooplankton
What class of cnidarians have a polyp stage only? - CORRECT ANSWER - Anthozoans
what class of cnidarians have medusa stage only - CORRECT ANSWER - scyphozoan
what class of cnidarians have both a medusa and polyp stage - CORRECT ANSWER -
hydrozoan
medusa - CORRECT ANSWER - free floating larval and adult form
polyp - CORRECT ANSWER - attached form
planula - CORRECT ANSWER - larval form
