Lecture Exam 1 - MC

Question 1

Which of the following animals belong to the Phylum Cnidaria, Class Anthozoa?
A. Portugeuse Man O’ War (Physalia physalis)
B. Elkhorn coral (Acropora palmata)
C. Orange Sea Pen (Ptilosarcus gurneyi) seen in lab
D. Both (a) and (b) above
E. Both (b) and (c) above
F. None of the above

Answer 1

E

Question 2

Which of the following animals contain symbiotic algae within their tissues?
A. The upside-down jellyfish (Cassiopea sp.)
B. Green hydra (Hydra viridissima)
C. The giant green anemone (Anthopleura xanthogrammica)
D. The “aggregating anemone” (Anthopleura elegantissima)
E. All of the above

Answer 2

E

Question 3

Which of the following organs within a jellyfish serves to distribute the food to all cells around the body?
A. The blood vessels
B. The gastrovascular cavity
C. The manubrium
D. The Velum
E. The oral arms

Answer 3

B,C

Question 4

Which of the following sponge taxa contain living species at the Ascon grade of construction?
A. Cl. Hexactinellida
B. Cl. Demospongia
C. Cl. Calcarea
D. Both (a) and (b) above
E. Both (b) and (c) above
F. None of the above-all ascon grade are now extinct

Answer 4

C

Question 5

Which traits are found in both Phylum Cnidaria AND Phylum Ctenophora? There can be >1 right answer
A. Nematocysts generally present
B. Extracellular digestion
C. Radial Symmetry
D. Polymorphism
E. No Coelom
F. Clearly diploblastic

Answer 5

A,C,E,F

Question 6

Which of these do not belong to Phylum Cnidaria ,Class Hydrozoa (can have >1 correct answer)?
A. Obelia
B. Tubularia
C. Physalia physalis
D. Turbellaria
E. Hydra
F. Aurelia aurita

Answer 6

B

Question 7

Select the classes of Cnidaria that can have a medusa stage in their lifecycle
A. Hydrozoa
B. Scyphozoa
C. Cubozoa
D. Anthozoa

Answer 7

A,B,C

Question 8

Which phyla are acoelomate? >1 answer might be correct
A. Cnidaria
B. Platyhelminthes
C. Ctenophora
D. Porifera
E. Nemertea

Answer 8

A,B,C,D

Question 9

What structure is used for sensing light or direction in combination with gravity?
A. Nectophore
B. Rhopalium
C. Collenchyme
D. Cilia
E. Statocyst
F. Cnidocyte

Answer 9

B

Question 10

11. Which of the following is a feature of Class Scyphozoa? (can have >1 correct answer)
    A. Diploblastic
    B. No excretory system
    C. Velum is present
    D. Medusa stage is dominant
    E. possesses a coelom
    F. Bi-radial symmetry

Answer 10

C,D,F

Question 11

Which of the following correctly describes the life cycle of Aurelia?
A. Medusa → Ephyra → Strobila → Planula → Scyphistoma
B. Medusa → Ephyra → Scyphistoma → Planula → Strobila
C. Planula → Scyphistoma → Strobila → Medusa → Ephyra
D. Planula → Scyphistoma → Strobila → Ephyra → Medusa
E. Planula → Stroblia → Scyphistoma → Ephyra → Medusa

Answer 11

D

Question 12

13. Which of the following Classes within Phylum Cnidaria do not have a medusa stage in their life cycle?
    A. Class Hydrozoa
    B. Class Scyphozoa
    C. Class Cubozoa
    D. Class Anthozoa
    E. Class Staurozoa

Answer 12

D

Question 13

14. The gas filled polyp in the Portuguese man-o-war, and in some other species in the order Siphonophora, s called a:
    A. Stem
    B. nectosome
    C. pneumatophore
    D. hydrozoa

Answer 13

C

Question 14

Class Staurozoa used to be a part of which class?
A. Cubozoa
B.Scyphozoa
C.Anthozoa
D. Hydrozoa

Answer 14

B

Question 15

Which life stage/form of the fluke Fasicola hepatica develops inside a mollusc?
A. Cercaria
B. Redia
C. Sporocyst
D. Miracidia

Answer 15

C

Question 16

Select the option option that is NOT true about the phylum platyhelminthes.
A. bilateraly symmetry
B. has a closed circulatory system
C. has a ladder-like nervous system
D. Triploblastic

Answer 16

B

Question 17

What do ctenophores use their colloblasts for?
A. Digestion
B. Movement through water
C. Capturing prey
D. Excretion

Answer 17

C

Question 18

What is the role of acontia and which class are they associated with?
A. Protection, Anthozoa
B. Protection, Cubozoa
C. Digestion, Ctenophora
D. Protection, Scyphozoa

Answer 18

C

Question 19

Which Class in Phylum Cnidaria is the most diverse?
A. Anthozoa
B. Hydrozoa
C. Scyphozoa
D. Ctenophora

Answer 19

B

Question 20

Which animal has multiciliated epidermal cells?
A. Turbellarians
B. Sponges
C. Cnidarians
D. Ctenophores

Answer 20

D

Question 21

What does the Rhyncocoel develop from?
A. as split in mesoderm
B. the lateral nerve cord
C. the proboscis
D. the dorsal vessel

Answer 21

A

Question 22

Which of these are NOT contained in the Mesohyl?(one answer only)
A. spicules
B. pinacocytes
C. amoebocytes
D. spongin

Answer 22

B

Question 23

25. Which of these taxa is/are considered to belong in the phylum Ctenophora? (can be more than one answer)
    A. Tentaculata
    B. Physalia physalis
    C. Cestum veneris
    D. Nuda
    E. Beroe
    F. Madreporaria

Answer 23

ACDE

Question 24

What protein are the skeletons of sea pens, sea whips, and sea fans made of?
A. Spongin
B. Gorgonian
C. Spicules
D. Collagen

Answer 24

B

Question 25

Which of the following taxa have a closed circulatory system?__________ A) Anthozoa D) Hydrozoa G) Both C and F B) Polycladida E) Porifera H) Both B and C C) Nemertea F) Polyplacophora I) Both A and C

Answer 25

G

Question 26

Which features (below) are unique to the Phylum Ctenophora? A) Tentacles D) Colloblasts G) Both C and D B) Nematocysts E) Bi-radial symmetry H) Both D and E C) Ctenes F) Both polyp & medusa I) Both C & E

Answer 26

G

Question 27

In flat worms, asexual reproduction via budding of new “zooids” at the tail end of the worm, which are nearly fully formed prior to breaking off, is called______. A) pedal laceration D) longitudinal fission B) architomy E) transverse fission C) conjugation F) paratomy

Answer 27

D

Question 28

Which of the following taxa contain species which are colonial and exhibit polymorphism? A) Scyphozoa D) All of these (A-C) B) Hydrozoa E) Both (B) and (C) C) Anthozoa F) None of these

Answer 28

E

Question 29

What feature can be used to distinguish a cubomedusan from a “true” jellyfish? A) Scyphomedusae reproduce sexually D) Scyphomedusae reproduce asexually B) Cubomeduase usually lack a velum E) Cubomedusae have lensed eyes C) Scyphomedusae lack ring canals

Answer 29

B

Question 30

Which of the following features do both Ctenophores and Cnidarians share? A) Extracellular digestion D) Rhabdites B) Indeterminate development E) Colloblasts C) Incomplete digestive tract F) Both (A) and (B) above

Answer 30

F

Question 31

What is the name of the larval form, found in gastropods, that undergoes torsion? A) Amphiblastula C) veliger E) Parenchymula B) Cydippid D) Pilidium F) planula

Answer 31

C

Question 32

Which of the following features are found in colonial siphonophores? A) Individual floats or Pneumatophores, seen in the Portuguese Man O’War B) Individual feeding polyps or gastrozooids C) Individual defensive polyps or dactylozooids with stinging cells D) All of the above are found in siphonophores E) Both (A) and (B) above, but not (C)

Answer 32

D

Question 33

Which of the following features is found in the mesoyl of a sponge? A) Choanocyte C) Pinacocyte E) None of the above B) Porocyte D) Archaeocyte

Answer 33

D

Question 34

Sponges have evolved from the simplest architectural type, called a ______, through to the most advanced type/from of architecture, called the _____________. A) Leucon, Ascon C) Ascon, Sycon E) Sycon, Ascon B) Sycon, Leucon D) Ascon, Leucon F) Leucon, Sycon

Answer 34

D

Question 35

Choanocytes in Leucon grade sponges are found in__________ A) Radial canals C) Ostia E) Oscula B) Flagellated chambers D) porocytes F) the spongocoel

Answer 35

B

Question 36

Which type of cell below is flat and coats the outer surface of a sponge? A) Choanocyte D) Amebocyte G) Osteocyte B) Porocytes E) Archeocytes H) Cnidocyte C) Sclerocyte F) Pinacocyte I) Parenchyma

Answer 36

F

Question 37

Which taxa (below) have spicules made of glass? A) Polycladida D) Demospongiae G) Enopla B) Hexactinellida E) Calcarea H) Both D and E above C) Acoela F) All of the above I) Both B & D above

Answer 37

B

Question 38

Which of the following cnidarian taxa contain species with either symbiotic zooxanthellae or zoochlorellae (or both) as symbionts within their tissues? A) Scyphozoa D) the freshwater genus Hydra B) Hydrozoa E) hermatypic corals C) Anthozoa F) All of the above

Answer 38

E

Question 39

Which of the following features do both Ctenophores and Cnidarians share? A) Extracellular digestion D) mesoglea B) Inner gastrodermis E) Both (B) and (C) above C) Outer epidermis F) All of the above

Answer 39

D

Question 40

Choanocytes in sycon grade sponges are found in__________ A) Radial canals C) Ostia E) Oscula B) Flagellated chambers D) porocytes F) the spongocoel

Answer 40

A

Question 41

Which process below is NOT a type of asexual reproduction found in Anthozoans? A) Longitudinal fission C) fragmentation E) None of the above B) Pedal laceration D) Paratomy

Answer 41

A

Question 42

Protostomous development and triploblastic larval construction are examples of traits that are _____________. A) Synapomorphies for flatworms & cnidarians B) Analagous traits in flatworms & cnidarians C) Homologous traits in flatworms & cnidarians D) Parsimonious traits in flatworms & cnidarians E) None of the above

Answer 42

C