test_bank ch33-8-mult

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test_bank ch33-8-mult

C

Which of the following animal groups is entirely aquatic?
A) Mollusca
B) Crustacea
C) Echinodermata
D) Arthropoda
E) Annelida

A

In a tide pool, a student encounters an organism with a hard outer covering that contains
much calcium carbonate, an open circulatory system, and gills. The organism could
potentially be a crab, a shrimp, a barnacle, or a bivalve. Which structure below would allow
for the most certain identification?
A) a mantle
B) a heart
C) a body cavity
D) a lophophore
E) eyes

D

Protostomes that have an open circulatory system and an exoskeleton of chitin are part of
which phylum?
A) Cnidaria
B) Annelida
C) Mollusca
D) Arthropoda
E) Echinodermata

C

Protostomes with a unique drape of tissue that may secrete a shell are part of which phylum?
A) Cnidaria
B) Annelida
C) Mollusca
D) Arthropoda
E) Echinodermata

A

Which of the following is a diploblastic phylum of aquatic predators?
A) Cnidaria
B) Annelida
C) Mollusca
D) Arthropoda
E) Echinodermata

E

Deuterostomes that have an endoskeleton are part of which phylum?
A) Cnidaria
B) Annelida
C) Mollusca
D) Arthropoda
E) Echinodermata

B

Protostomes that have a closed circulatory system and obvious segmentation are part of
which phylum?
A) Cnidaria
B) Annelida
C) Mollusca
D) Arthropoda
E) Echinodermata

D

An elementary school science teacher decided to liven up the classroom with a salt-water aquarium. Knowing that salt-water aquaria can be quite a hassle, the teacher proceeded stepwise. First, the teacher conditioned the water. Next, the teacher decided to stock the tank with various marine invertebrates, including a polychaete, a siliceous sponge, several bivalves, a shrimp, several sea anemones of different types, a colonial hydra, a few coral species, an ctoproct, a sea star, and several gastropod varieties. Lastly, some vertebrates-a parrotfish and a clownfish-were added. She arranged for daily feedings of copepods and feeder fish.
One day, little Tommy (a student in an under-supervised class of 40 fifth graders) got the
urge to pet Nemo (the clownfish) who was swimming among the waving petals of a pretty
underwater "flower" that had a big hole in the midst of the petals. Tommy giggled upon
finding that these petals were sticky feeling. A few hours later, Tommy was in the nurse's
office with nausea and cramps. Microscopic examination of his fingers would probably have
revealed the presence of
A) teeth marks.
B) spines.
C) spicules.
D) nematocysts.
E) a radula.

B

An elementary school science teacher decided to liven up the classroom with a salt-water aquarium. Knowing that salt-water aquaria can be quite a hassle, the teacher proceeded stepwise. First, the teacher conditioned the water. Next, the teacher decided to stock the tank with various marine invertebrates, including a polychaete, a siliceous sponge, several bivalves, a shrimp, several sea anemones of different types, a colonial hydra, a few coral species, an ctoproct, a sea star, and several gastropod varieties. Lastly, some vertebrates-a parrotfish and a clownfish-were added. She arranged for daily feedings of copepods and feeder fish.
Parrotfish have mouths adapted to scrape algae off of coral, and can even munch on coral.
The aquarium's corals rapidly dwindled; in their place were shards of
A) chitin.
B) calcium carbonate.
C) silica.
D) bone.
E) chitin impregnated with calcium carbonate.

C

An elementary school science teacher decided to liven up the classroom with a salt-water aquarium. Knowing that salt-water aquaria can be quite a hassle, the teacher proceeded stepwise. First, the teacher conditioned the water. Next, the teacher decided to stock the tank with various marine invertebrates, including a polychaete, a siliceous sponge, several bivalves, a shrimp, several sea anemones of different types, a colonial hydra, a few coral species, an ctoproct, a sea star, and several gastropod varieties. Lastly, some vertebrates-a parrotfish and a clownfish-were added. She arranged for daily feedings of copepods and feeder fish.
The species in the aquarium that possess true bilateral symmetry include the
1. sponges.
2. molluscs.
3. echinoderm.
4. sea anemones.
5. ectoprocts.
A) 2 only
B) 1 and 4
C) 2 and 5
D) 2, 3, and 5
E) 2, 3, 4, and 5

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