hhj flower
1. If a mollusk moves by a broad muscular foot, it is probably
a) a bivalve b) a gastropod c) two-shelled d) a cephalopod
2. A herbivorous mollusk scrapes algae from rocks and twigs with its
a) radula b) poison glands c) foot d) feathery gills
3. The cephalopod that has lost its shell completely is the
a) octopus b) slug c) cuttlefish d) nautilus e. squid
4. The blood of annelids typically flows
a) only in dorsal vessels c. only in ventral vessels
b) in a closed circulatory system d. in an open circulatory system
5. In most mollusks, fertilization
a) is external c. is internal
b) occurs in hermaphrodites d. produces hermaphrodites
6. Clams and oysters may include high concentrations of viruses, bacteria, and toxic protists because they are
a) herbivores b) carnivores c) filter feeders d) detritus feeders
7. The many segments of any annelids body
a) contain clitellum c. contain light sensitive cells
b) are all identical d. are separated by septa
8. The host usually does not know a leech is sucking its blood because the leech releases a special substance that
a) prevents blood clotting c. anesthetizes the wound
b) acts as symbiotic bacteria d. camouflages the leech
9. Bivalves include each of the following except
a) mussels b) oysters c) clams d) nautiluses
10. Evidence that mollusks and annelids evolved from a common ancestor is based on the fact that animals of both phyla have
a) external shells b) internal shells c) trochophore larvae d) a mouth and anus
11. Some cephalopods protect themselves in each of the following ways except by
a) moving backward by jet propulsion
b) hiding themselves within the tentacle of cnidarians
c) changing colour to match the surroundings
d) releasing dark, foul-tasting ink
12. The cephalopods are known as the
a) “stomach-foot” mollusks c)“head-foot” mollusks
b) two-shelled mollusks d) coiled-shell mollusks
13. In annelids, metabolic wastes are
a) a bivalve b) a gastropod c) two-shelled d) a cephalopod
2. A herbivorous mollusk scrapes algae from rocks and twigs with its
a) radula b) poison glands c) foot d) feathery gills
3. The cephalopod that has lost its shell completely is the
a) octopus b) slug c) cuttlefish d) nautilus e. squid
4. The blood of annelids typically flows
a) only in dorsal vessels c. only in ventral vessels
b) in a closed circulatory system d. in an open circulatory system
5. In most mollusks, fertilization
a) is external c. is internal
b) occurs in hermaphrodites d. produces hermaphrodites
6. Clams and oysters may include high concentrations of viruses, bacteria, and toxic protists because they are
a) herbivores b) carnivores c) filter feeders d) detritus feeders
7. The many segments of any annelids body
a) contain clitellum c. contain light sensitive cells
b) are all identical d. are separated by septa
8. The host usually does not know a leech is sucking its blood because the leech releases a special substance that
a) prevents blood clotting c. anesthetizes the wound
b) acts as symbiotic bacteria d. camouflages the leech
9. Bivalves include each of the following except
a) mussels b) oysters c) clams d) nautiluses
10. Evidence that mollusks and annelids evolved from a common ancestor is based on the fact that animals of both phyla have
a) external shells b) internal shells c) trochophore larvae d) a mouth and anus
11. Some cephalopods protect themselves in each of the following ways except by
a) moving backward by jet propulsion
b) hiding themselves within the tentacle of cnidarians
c) changing colour to match the surroundings
d) releasing dark, foul-tasting ink
12. The cephalopods are known as the
a) “stomach-foot” mollusks c)“head-foot” mollusks
b) two-shelled mollusks d) coiled-shell mollusks
13. In annelids, metabolic wastes are