Test Bank - Biological Science, 7th Edition
(Freeman, 2020) Chapter 31: Protostomes
1. Lophotrochozoan - ANSWER: A group of protostomes that includes mollusks,
annelids, and flatworms. Named for the lophophore (feeding structure) and
trochophore (larval form) features found in some groups.
2. Lophophore - ANSWER: A specialized feeding structure that rings the mouth
of certain protostomes, used for suspension feeding.
3. Trochophore - ANSWER: A type of larva found in some groups of
lophotrochozoans.
4. Ecdysozoa - ANSWER: A major group of protostomes that grow by molting,
including nematodes and arthropods.
5. Tagmata - ANSWER: The major body regions of arthropods, such as the head,
thorax, and abdomen.
6. Hemocoel - ANSWER: The primary body cavity in arthropods, which serves as
a space for circulation.
7. Mollusk foot - ANSWER: A large muscle used primarily for movement in
mollusks.
8. Siphon - ANSWER: A tube-like structure in mollusks used for directing water
flow, often for movement or feeding.
9. Rotifera (Rotifers) - ANSWER: Microscopic, aquatic animals with a ciliated
crown used for feeding, found in damp environments.
10. Platyhelminthes (Flatworms) - ANSWER: A phylum of soft-bodied,
unsegmented worms that include free-living and parasitic species.
11. Turbellarians - ANSWER: Free-living flatworms in the phylum Platyhelminthes.
12. Cestodes - ANSWER: Tapeworms, parasitic flatworms.
13. Trematodes - ANSWER: Parasitic flatworms, known as flukes.
14. Annelids (Segmented Worms) - ANSWER: Worms with segmented bodies and
a coelom that acts as a hydrostatic skeleton.
(Freeman, 2020) Chapter 31: Protostomes
1. Lophotrochozoan - ANSWER: A group of protostomes that includes mollusks,
annelids, and flatworms. Named for the lophophore (feeding structure) and
trochophore (larval form) features found in some groups.
2. Lophophore - ANSWER: A specialized feeding structure that rings the mouth
of certain protostomes, used for suspension feeding.
3. Trochophore - ANSWER: A type of larva found in some groups of
lophotrochozoans.
4. Ecdysozoa - ANSWER: A major group of protostomes that grow by molting,
including nematodes and arthropods.
5. Tagmata - ANSWER: The major body regions of arthropods, such as the head,
thorax, and abdomen.
6. Hemocoel - ANSWER: The primary body cavity in arthropods, which serves as
a space for circulation.
7. Mollusk foot - ANSWER: A large muscle used primarily for movement in
mollusks.
8. Siphon - ANSWER: A tube-like structure in mollusks used for directing water
flow, often for movement or feeding.
9. Rotifera (Rotifers) - ANSWER: Microscopic, aquatic animals with a ciliated
crown used for feeding, found in damp environments.
10. Platyhelminthes (Flatworms) - ANSWER: A phylum of soft-bodied,
unsegmented worms that include free-living and parasitic species.
11. Turbellarians - ANSWER: Free-living flatworms in the phylum Platyhelminthes.
12. Cestodes - ANSWER: Tapeworms, parasitic flatworms.
13. Trematodes - ANSWER: Parasitic flatworms, known as flukes.
14. Annelids (Segmented Worms) - ANSWER: Worms with segmented bodies and
a coelom that acts as a hydrostatic skeleton.
