Supplemental Instruction
Iowa State University / Leader: / Stephanie
Course: / Biology 211
Instructor: / Roe
Date: / Feb 25, 2013
26. What is developmental biology?
a) The study of processes from a single cell to a multicellular organism
b) The study of how organisms are constructed
c) The study of embryonic growth
d) The study of developmental mutations
e) All of the above
28. The fate of the blastopore distinguishes between Protostomes in which it becomes the______, and Deuterostomes in which it becomes the______.
a) mouth, coelom
b) anus, mouth
c) coelom, archenteron
d) mouth, anus
e) none of the above
29. At which developmental stage should one be able to first distinguish a protostome embryo from a deuterostome embryo?
a) cleavage
b) metamorphosis
c) gastrulation
d) fertilization
e) coelom formation
31. Which of the following is a characteristic found only in animals?
a) Multicellular
b) Cell walls of cellulose
c) Absorptive nutrition
d) proteins hold cells together
e) Heterotrophic
32. All animals with ______have some type of coelom.
a) radial symmetry
b) two germ layers
c) bilateral symmetry
d) true tissues
e) eyes
34. What is the function of a coelom?
a) The fluid-filled cavity cushions and protects the organs.
b) It is a place for muscle attachment.
c) It is where digestion occurs.
d) It is where fertilization occurs.
e) All of the above are correct
37. Pseudocoelomates are animals that _____.
a) do not have a brain
b) do not have mesoderm tissue
c) have protostome development
d) have a coelom that is not completely lined with mesoderm
e) have a solid body without a cavity
40. ______is a process that rearranges the developing embryo to form germ layers.
a) Gastrulation
b) Cleavage
c) Mitosis
d) Blastulation
e) Blastopore
41. ______is an important developmental process, when a single-cell zygote undergoes mitotic cell division to become multicellular.
a) Fertilization
b) Gastrulation
c) Cleavage
d) Meiosis
e) Blastulation
43. The Porifera have choanocytes, a unique cell type in Kingdom Animalia. Which protist is structurally similar to choanocytes?
a) dinoflagellates
b) choanoflagellates
c) apicomplexans
d) euglena
e) diatoms
44. The common ancestor of all animals was probably a ______.
a) bacterium
b) Archea
c) fungus
d) protist
e) Bryophyte
47. You are trying to identify an organism. It is an animal, but it does not have nerve or muscle tissue. It is neither diploblastic nor triploblastic. It is probably a __.
a) comb jelly
b) sponge
c) flatworm
d) nematode
e) jellyfish
48. In Cnidaria, ______are colonial polyps that secrete a calcium carbonate skeleton that create large ecologically-important structures and are found in shallow seas.
a) sea anemones
b) Portaguese man-of-war
c) Corals
d) Porifera
e) Platyhelminthes
50. The characteristic of Cnidaria that distinguishes it from all other animal phyla is ____.
a) a gastrovascular cavity
b) three germ layers
c) true tissues
d) radial symmetry
e) hydrostatic skeleton
51. All of the following are characteristics of the phylum Cnidaria except ___.
a) a gastrovascular cavity
b) a polyp stage
c) a medusa stage
d) cnidocytes
e) a pseudocoelom
52. The ______is a cell type found only in Cnidaria and is used to capture prey.
a) blastocyst
b) cnidocyte
c) osculum
d) choanocyte
e) amoebocyte
54. The ______is a cell type found only in Porifera and is used to engulf food particles by phagocytosis.
a) blastocyst
b) cnidocyte
c) osculum
d) choanocyte
e) amoebocyte
55. A ______is used for digestion, but has only a single opening.
a) gastrovascular cavity
b) intestine
c) gut
d) pharynx
e) B and C are correct
57. Platyhelminthes differ from cnidarians in that platyhelminthes have ____, which is not found in cnidarians.
a) an anus that develops from the blastopore
b) three germ layers
c) true tissues
d) radial symmetry
e) a true coelom
59. In animals, bilateral symmetry is correlated with _____.
a) an ability to attach to a host organism
b) the presence of a skeleton
c) adaptation to terrestrial environments
d) cephalization
e) an ability to swim
60. In a parasitic life cycle, sexual reproduction occurs ___ .
a) in the intermediate host
b) outside of the host’s body
c) in final/terminal host
d) None are true; parasites do not reproduce sexually
e) Both A and B are correct
61. Generally speaking, members of which class(es) of flatworms are not parasites?
a) Turbellaria
b) Trematoda
c) Cestoda
d) Monongena
e) both a & b
63. Which of the following statements about tapeworm feeding is correct?
a) they have complete digestive tracts
b) they ingest food with their mouths
c) As adults they live and feed in their hosts blood stream
d) They are autotrophic
e) They absorb nutrients through their body wall
66. In parasitic platyhelminthes, most of the body cavity is filled with______.
a) gastrovascular cavity
b) reproductive organs
c) sensory organs
d) a pharynx
e) segmentation
73. Molluscs do not have a single common body plan. Despite this, all mollusks have which of the following?
a) a beak
b) fins
c) a foot
d) a radula
e) Both C and D
74. Gastropods, bivalves and cephalopods all have a ______that secretes the shell.
a) foot
b) mantle
c) gill
d) visceral mass
e) chromophore
76. Molluscs differ from nematodes in that mollusks have _____, which is not found in nematodes.
a) bilateral symmetry
b) three germ layers
c) an anus that develops from the blastopore
d) true tissues
e) a body cavity completely lined with mesoderm tissue
78. Which of the following is not a trait of cephalopods?
a) modified foot used to grasp prey
b) closed circulatory system
c) gastrovascular cavity
d) beak to tear prey
e) mantle
81. In Iowa, freshwater bivalves have a parasitic larval stage. How is parasitism used by this group of organisms?
a) The larvae are dispersed by fish hosts
b) The larvae feed on the blood of their hosts
c) The larvae reproduce sexually on their hosts
d) The larvae reproduce asexually on their hosts
e) The larvae need fish as an intermediate host before moving to a final host
82. The animal phylum ______has a true coelom, complete digestive track and segmentation.
a) Annelida
b) Platyhelminthes
c) Nematoda
d) Mollusca
e) Arthropoda
83. Annelids are characterized by all of the following except ____.
a) a hydrostatic skeleton
b) segmentation
c) a complete digestive system
d) some parasitic species
e) a cuticle made of chitin
87. Which of the following annelid classed produce a blood anti-coagulent ?
a) Oligochaeta
b) Polychaeta
c) Hirudinea
d) all three
e) Both b and c
89. Which of the following is NOT a characteristic of all Ecdysozoa?
a) protostomes
b) ability to molt periodically when growing
c) jointed appendages
d) bilaterally symmetric
e) exoskeletons
90. Which group contains both ecdysozoans and lophotrochozoans?
a) Deuterostomes
b) Protostomes
c) Arthropoda
d) Chordata
e) Both A and D are correct
93. What function is shared between an exoskeleton and an endoskeleton?
a) a site for muscle attachment
b) prevents water-loss
c) provides protection
d) important for respiration
e) requires periodic shedding for organismal growth
96. Which of the following is false about Nematodes?
a) Nematodes play an important role in decomposition.
b) Nematodes have a pseudocoelom.
c) Nematodes have a complete digestive system.
d) Some nematode species are parasites.
e) None of the above; all are true
97. Which of the following characteristics do nematodes share with fungi?
a) Both play an important role in decomposition.
b) Both have cell walls.
c) Both have structures made of chitin
d) Both A and B are correct
e) Both B and C are correct
99. Which of the following are characteristics of arthropods?
I. protostome development
II. bilateral symmetry
III. a pseudocoelom
IV. three embryonic germ layers
V. a closed circulatory system
a) I, II
b) I, II, IV
c) II, III
d) II, III, V
e) III, IV, V
101. The most successful group (contains the greatest number of species) in the Arthropoda is __.
a) Chelicerata
b) Myriapoda
c) Hexapoda/Insecta
d) Crustacea
e) Cephalopoda
103. Among arthropods, only ______possess specialized mouthparts that were a major adaptation for their radiation and diversification.
a) Myriapoda
b) Chelicerata
c) Gastropoda
d) Hexapoda/Insecta
e) Crustacea
136. Earthworms (Phylum Annelida) are ecologically important because they:
a) Recycle organic matter by eating it.
b) Produce mineral-rich casts.
c) Aerate the soil when making tunnels.
d) Both A and C
e) All statements are true.
137. Which phylum is diploblastic?
a) Cnidaria
b) Nematoda
c) Platyhelminthes
d) Poriferia
e) Echinodermata
138. ______are acoelomate protostomes that are flattened dorsoventrally.
a) Mollusca
b) Annelida
c) Platyhelminthes
d) Nematoda
e) Echinodermata
140. The animal phylum ______are pseudocoelomates, have complete digestive tract and molt.
a) Annelida
b) Platyhelminthes
c) Nematoda
d) Mollusca
e) Arthropoda
142. Which of the following descriptions is incorrect
a) Echinodermata – bilateral symmetry as larvae, coelom present
b) Nematoda – roundworms, pseudocoelomate
c) Cnidaria – radial symmetry, polyp and medusa body forms
d) Platyhelminthes – flatworms, gastrovascular cavity, acoelomate
e) Annelida – segmented worms, gastrovascular cavity, coelom present
144. Which molluscan class includes snails?
a) Turbellaria
b) Bivalvia
c) Gastropoda
d) Cephalopoda
e) None of the above; snails are not molluscs
145. Which of the following pairs are incorrect?
a) cephalo = head
b) gastro = stomach
c) poda = foot
d) bi = divided
e) valvia = shell
146. Which of the following pairs are incorrect?
a) meso = inside
b) gastro = stomach
c) poda = foot
d) arthro = jointed
e) coel = cavity
147. Which of the following pairs are incorrect?
a) ecto = layer
b) gastro = stomach
c) poda = foot
d) meso = middle
e) coel = cavity
67. Using the life cycle of the liver fluke, please answer the following question.
Which is the final/terminal host?
a) snail
b) cow
c) sheep
d) human
e) B, C, and D are all final hosts