A) chitons
B) bivalves
C) gastropods
D) cephalopods
E) both chitons and gastropods
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Multiple Choice
A) the ability to fly
B) jointed appendages allowing quick movement
C) the ability to undergo metamorphosis
D) large variation in different kinds of appendages
E) the ability to eat both plants and animals
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Multiple Choice
A) pore cells.
B) epidermal cells.
C) choanocytes.
D) amoebocytes.
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Multiple Choice
A) rhinophores.
B) dorsal plummules.
C) cerata.
D) more than one of these.
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Multiple Choice
A) jaws.
B) nematocysts.
C) tubefeet.
D) a lophophore.
E) a madreporite.
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Multiple Choice
A) a mantle.
B) a radula.
C) gills.
D) embryonic torsion.
E) distinct cephalization.
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Multiple Choice
A) mollusc.
B) sea star.
C) shrimp.
D) polychaete.
E) parrotfish.
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Multiple Choice
A) parapodia.
B) gills.
C) the skin.
D) book lungs.
E) pairs of hollow bristles.
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Multiple Choice
A) physician
B) pirate
C) pharmacist
D) plumber
E) painter
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Multiple Choice
A) It takes longer for the young to develop, giving them more time to grow.
B) Different larval stages confuse predators.
C) Young eat different foods than adults, which decreases competition between offspring and adults.
D) The early larval stages go dormant when environmental conditions aren't optimal.
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Multiple Choice
A) They are larval dragonflies, destined to undergo incomplete metamorphosis.
B) They are larval dragonflies, destined to undergo complete metamorphosis.
C) They are adult dragonflies, so old that they can no longer fly, have fallen into the pond, but have not yet drowned.
D) They are adult dragonflies that must, like many amphibian species, return to water in order to mate.
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Multiple Choice
A) Platyhelminthes; a cuticle of chitin
B) Nematoda; an alimentary canal
C) Annelida; a body cavity
D) Nematoda; a circulatory system
E) Annelida; muscle in the body wall
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Multiple Choice
A) spiders.
B) insects.
C) centipedes.
D) millipedes.
E) crustaceans.
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Multiple Choice
A) insects.
B) crustaceans.
C) aquatic spiders.
D) myriapods.
E) eurypterids.
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Multiple Choice
A) use of fluid in the body cavity as a hydrostatic skeleton
B) ecdysis
C) presence of a circulatory system
D) presence of segmentation
E) absence of species with parasitic lifestyles
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Multiple Choice
A) streptomycin
B) spongin
C) calcium carbonate
D) silica
E) cribrostatin
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Multiple Choice
A) antennae.
B) an open circulatory system.
C) an exoskeleton of chitin.
D) complex eyes.
E) sex organs.
Correct Answer
verified
Multiple Choice
A) rhinophores.
B) dorsal plummules.
C) cerata.
D) more than one of these.
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Multiple Choice
A) none of their cells are far removed from the gastrovascular cavity or from the external environment.
B) they lack mesoderm as embryos and, therefore, lack the adult tissues derived from mesoderm.
C) their flame bulbs can carry out respiratory and circulatory functions.
D) their body cavity, a pseudocoelom, carries out these functions.
Correct Answer
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Multiple Choice
A) Echinodermata-bilateral symmetry as a larva, coelom present
B) Nematoda-roundworms, pseudocoelomate
C) Cnidaria-radial symmetry, polyp and medusa body forms
D) Platyhelminthes-flatworms, gastrovascular cavity, acoelomate
E) Porifera-gastrovascular cavity, coelom present
Correct Answer
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