A) clams
B) squids
C) lobsters
D) nautiluses
E) snails
G) A) and E)
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A) Mollusca & Chordata
B) Arthropoda & Vertebrata
C) Chordata & Vertebrata
D) Echinodermata & Chordata
E) Annelida & Mollusca
G) None of the above
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B) False
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A) Segmented body.
B) Exoskeleton.
C) Brain and a ventral nerve cord.
D) Contain a variety of respiratory organs.
E) All are features that made arthropods successful.
G) B) and E)
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A) Coelom forms by a splitting of the mesoderm,the blastophore becomes the mouth and the cleavage is spiral.
B) Coelom forms by a splitting of the mesoderm,the blastophore becomes the anus and the cleavage is spiral.
C) Coelom forms by a splitting of the mesoderm,the blastophore becomes the mouth and the cleavage is radial.
D) None of the above features are unique to the protostomes.
F) A) and C)
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A) Bilateral symmetry at some point in their life,three germ layers as embryos,are aquatic,and are classified as protostomes.
B) Bilateral symmetry at some point in their life,two germ layers as embryos,are aquatic,and are classified as protostomes.
C) Bilateral symmetry at some point in their life,three germ layers as embryos,are aquatic,and are classified as deuterostomes.
D) Bilateral symmetry at some point in their life,three germ layers as embryos,are terrestrial,and are classified as protostomes.
E) Radial symmetry at some point in their life,three germ layers as embryos,are aquatic,and are classified as protostomes.
G) C) and D)
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A) sexual
B) asexual
C) budding
D) fragmentation
E) Both sexual and asexual
G) B) and C)
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A) fragmentation
B) sexual reproduction
C) budding
D) None of these methods would be successful.
F) A) and D)
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A) a swimming medusa with the mouth pointing downward
B) a swimming medusa with the mouth pointing upward
C) a sessile medusa with the mouth pointing upward
D) a sessile polyp form with the mouth pointing downward
E) a freely moving polyp with the mouth pointing upward
G) A) and B)
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A) gastrocoelomates
B) blastocoelomates
C) protostomes
D) deuterostomes
E) triploblastics
G) A) and B)
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A) If the cells of a sponge are mechanically separated,they will spontaneously reassemble into a complete and functioning sponge.
B) Sponges have two tissue layers.
C) Sponges have an osculum,an opening in the upper body.
D) Sponges are filter feeders.
E) Sponges can reproduce sexually or asexually.
G) None of the above
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Correct Answer
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