Question 1

What are 2 functions of naturally produced chemical defenses in sponges?

Accepted Answer

Sponges have long been known to be relatively immune to bacterial infections. Sponges produce antimicrobial chemicals within their tissues that ward off bacteria. Other sponges use chemicals, which inhibit the settlement of larvae of other sessile animals on the sponges' tissues and may also clear a particular rock surface of encrusting algae and sessile animals.

Question 2

Colonial cnidarians that exhibit both the polyp stage and the medusa stage in their life cycles are:

Accepted Answer

A)  hydrozoans. 
B)  scyphozoans. 
C)  cubozoans. 
D)  anthozoans. 
E)  bryozoans. 
A)  hydrozoans. 
B)  scyphozoans. 
C)  cubozoans. 
D)  anthozoans. 
E)  bryozoans. A

Question 3

True jellyfish belong to the class Scyphozoa of the phylum Cnidaria.

Accepted Answer

A) True 
 B)False  True

Question 4

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?

Accepted Answer

A)  Gelatinous body rules out Cnidaria. 
B)  Lack of tentacles rules out Cnidaria. 
C)  Bilateral symmetry rules out Platyhelminthes. 
D)  Transparent body rules out Ctenophora. 
A)  Gelatinous body rules out Cnidaria. 
B)  Lack of tentacles rules out Cnidaria. 
C)  Bilateral symmetry rules out Platyhelminthes. 
D)  Transparent body rules out Ctenophora.

Question 5

Animals with eight rows of comb plates are called:

Accepted Answer

A)  jellyfish. 
B)  seastars. 
C)  ctenophores. 
D)  polycheates. 
E)  octocorals. 
A)  jellyfish. 
B)  seastars. 
C)  ctenophores. 
D)  polycheates. 
E)  octocorals.

Question 6

A flagellated cell involved in bringing water into the spongocoel of sponges is called a(n):

Accepted Answer

A)  spicule. 
B)  choanocyte. 
C)  osculum. 
D)  ostium. 
E)  pinocyte. 
A)  spicule. 
B)  choanocyte. 
C)  osculum. 
D)  ostium. 
E)  pinocyte.

Question 7

Sponges feed on attached algae.

Accepted Answer

A) True 
 B)False

Question 8

MATCHING
Match the characteristic with the most closely associated animal group.
-Ctenophora

Accepted Answer

A) bilateral symmetry 
B) many types are asymmetric 
C) radially symmetric 
A) bilateral symmetry 
B) many types are asymmetric 
C) radially symmetric

Question 9

All of the following have bilateral symmetry except:

Accepted Answer

A)  Nemertea. 
B)  Phoronids. 
C)  Ctenophora. 
D)  Platyhelminthes. 
A)  Nemertea. 
B)  Phoronids. 
C)  Ctenophora. 
D)  Platyhelminthes.

Question 10

Water enters the sponge spongocoel through the:

Accepted Answer

A)  choanocytes. 
B)  spicules. 
C)  ostia. 
D)  osculum. 
E)  pinocytes. 
A)  choanocytes. 
B)  spicules. 
C)  ostia. 
D)  osculum. 
E)  pinocytes.

Question 11

Colonial animals called moss animals (due to their white encrustations or fuzzy growths) are:

Accepted Answer

A)  phoronids. 
B)  bryozoans. 
C)  brachiopods. 
D)  anemones. 
E)  hydroids. 
A)  phoronids. 
B)  bryozoans. 
C)  brachiopods. 
D)  anemones. 
E)  hydroids.

Question 12

Large sponges belonging to the class ____ are harvested for commercial use.

Accepted Answer

A)  Hexactinellida 
B)  Sclerospongia 
C)  Spheciospongia 
D)  Demospongia 
E)  Calcarea 
A)  Hexactinellida 
B)  Sclerospongia 
C)  Spheciospongia 
D)  Demospongia 
E)  Calcarea

Question 13

The primary feeding type for lophophorates is:

Accepted Answer

A)  scavengers. 
B)  attachment predators. 
C)  herbivores. 
D)  filter feeders. 
E)  infaunal detritivores. 
A)  scavengers. 
B)  attachment predators. 
C)  herbivores. 
D)  filter feeders. 
E)  infaunal detritivores.

Question 14

Most species of ctenophore are:

Accepted Answer

A)  haploid. 
B)  male or female only. 
C)  hermaphroditic. 
D)  asexual. 
E)  none of the above 
A)  haploid. 
B)  male or female only. 
C)  hermaphroditic. 
D)  asexual. 
E)  none of the above

Question 15

Asexual reproduction in sponges is by binary fission.

Accepted Answer

A) True 
 B)False

Question 16

The Portuguese man-o-war is a member of the class:

Accepted Answer

A)  Hydrozoa. 
B)  Scyphozoa. 
C)  Cubozoa. 
D)  Anthozoa. 
E)  Bryozoa. 
A)  Hydrozoa. 
B)  Scyphozoa. 
C)  Cubozoa. 
D)  Anthozoa. 
E)  Bryozoa.

Question 17

MATCHING
Match the characteristic with the most closely associated animal group.
-Porifera

Accepted Answer

A) bilateral symmetry 
B) many types are asymmetric 
C) radially symmetric 
A) bilateral symmetry 
B) many types are asymmetric 
C) radially symmetric

Question 18

Name the three animal phyla that feed and respire with a lophophore.

Accepted Answer

Three phyla that use

Question 19

Match the term with its most closely associated animal group.
-Cnidarian

Accepted Answer

A) Gastrovascular cavity 
B) Stylet 
C) Spongocoel 
A) Gastrovascular cavity 
B) Stylet 
C) Spongocoel

Question 20

MATCHING
Match the characteristic with the most closely associated animal group.
-Platyhelminthes

Accepted Answer

A) bilateral symmetry 
B) many types are asymmetric 
C) radially symmetric 
A) bilateral symmetry 
B) many types are asymmetric 
C) radially symmetric

What are 2 functions of naturally produced chemical defenses in sponges?

Colonial cnidarians that exhibit both the polyp stage and the medusa stage in their life cycles are:

True jellyfish belong to the class Scyphozoa of the phylum Cnidaria.

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?

Animals with eight rows of comb plates are called:

A flagellated cell involved in bringing water into the spongocoel of sponges is called a(n):

Sponges feed on attached algae.

MATCHING Match the characteristic with the most closely associated animal group. -Ctenophora

All of the following have bilateral symmetry except:

Water enters the sponge spongocoel through the:

Colonial animals called moss animals (due to their white encrustations or fuzzy growths) are:

Large sponges belonging to the class ____ are harvested for commercial use.

The primary feeding type for lophophorates is:

Most species of ctenophore are:

Asexual reproduction in sponges is by binary fission.

The Portuguese man-o-war is a member of the class:

MATCHING Match the characteristic with the most closely associated animal group. -Porifera

Name the three animal phyla that feed and respire with a lophophore.

Match the term with its most closely associated animal group. -Cnidarian

MATCHING Match the characteristic with the most closely associated animal group. -Platyhelminthes

Science and Marine Biology

Fundamentals of Ecology

Geology of the Ocean

Water, Waves, and Tides

Biological Concepts

Marine Microbes

Multicellular Primary Producers

Higher Invertebrates

Marine Fishes

Reptiles and Birds

Marine Mammals

Intertidal Communities

Estuaries

Coral Reef Communities

Continental Shelves and Neritic Zone

The Open Sea

Life in the Oceans Depths

Harvesting the Oceans Resources

Oceans in Jeopardy

Filters

Exam 8: Lower Invertebrates

What are 2 functions of naturally produced chemical defenses in sponges?

Colonial cnidarians that exhibit both the polyp stage and the medusa stage in their life cycles are:

True jellyfish belong to the class Scyphozoa of the phylum Cnidaria.

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?

Animals with eight rows of comb plates are called:

A flagellated cell involved in bringing water into the spongocoel of sponges is called a(n):

Sponges feed on attached algae.

MATCHING Match the characteristic with the most closely associated animal group. -Ctenophora

All of the following have bilateral symmetry except:

Water enters the sponge spongocoel through the:

Colonial animals called moss animals (due to their white encrustations or fuzzy growths) are:

Large sponges belonging to the class ____ are harvested for commercial use.

The primary feeding type for lophophorates is:

Most species of ctenophore are:

Asexual reproduction in sponges is by binary fission.

The Portuguese man-o-war is a member of the class:

MATCHING Match the characteristic with the most closely associated animal group. -Porifera

Name the three animal phyla that feed and respire with a lophophore.

Match the term with its most closely associated animal group. -Cnidarian

MATCHING Match the characteristic with the most closely associated animal group. -Platyhelminthes

Science and Marine Biology

Fundamentals of Ecology

Geology of the Ocean

Water, Waves, and Tides

Biological Concepts

Marine Microbes

Multicellular Primary Producers

Higher Invertebrates

Marine Fishes

Reptiles and Birds

Marine Mammals

Intertidal Communities

Estuaries

Coral Reef Communities

Continental Shelves and Neritic Zone

The Open Sea

Life in the Oceans Depths

Harvesting the Oceans Resources

Oceans in Jeopardy

Filters