Biology 2015

Which of these is not a characteristic of animals?
a. heterotrophic
b. ingest their food
c. cells lack cell walls
d. have chlorophyll
e. multicellular

The phylogenetic tree of animals shows that
a. rotifers are closely related to flatworms.
b. both molluscs and annelids are protostomes.
c. some animals have radial symmetry.
d. sponges were the first to evolve from an ancestral protist.
e. All of these are correct

Which of these does not pertain to a protostome?
a. spiral cleavage
b. blastopore is associated with the anus
c. coelom, splitting of mesoderm
d. annelids, arthropods, and molluscs
e. mouth is associated with first opening

Which features of a sponge are mismatched?
a. buds—asexual reproduction
b. collar cells—flagellated
c. osculum—upper opening
d. spicules—sexual reproduction
e. spongin—support

Comb jellies are most closely related to
a. cnidarians.
b. sponges.
c. flatworms.
d. roundworms.
e. rotifers.

Which of these pairs is mismatched?
a. sponges—spicules
b. cnidarians—nematocysts
c. cnidarians—polyp and medusa
d. hydra—nerve net
e. comb jellies—proglottids

Flukes and tapeworms
a. show cephalization.
b. have well-developed reproductive systems.
c. have well-developed nervous systems.
d. are free-living.
e. are generally microscopic.

Which of these best shows that snails are not closely related to crayfish?
a. Snails are terrestrial, and crayfish are aquatic.
b. Snails have a broad foot, and crayfish have jointed appendages.
c. Snails are hermaphroditic, and crayfish have separate sexes.
d. Snails are insects, but crayfish are fishes.
e. Snails are bivalves, and crayfish are chelicerates.

Segmentation in the earthworm is not exemplified by
a. body rings.
b. coelom divided by septae.
c. setae on most segments.
d. nephridia interior in most segments.
e. tympanum exterior to segments.

Roundworms lack which feature?
a. periodically shed their cuticle
b. pseudocoelom
c. segmentation
d. some are parasitic
e. All of these are correct.

Label this diagram.

Which characteristic(s) account(s) for the success of arthropods?
a. jointed exoskeleton
b. well-developed nervous system
c. segmentation
d. respiration adapted to environment
e. All of these are correct.

The two phyla in the Deuterostomia are
a. Arthropoda and Nematoda.
b. Brachiopoda and Platyhelminthes.
c. Cestoda and Rotifera.
d. Cnidaria and Ctenophora.
e. Echinodermata and Chordata.

Which is not a characteristic feature of sea stars?
a. coelom
b. eyespot
c. skin gills
d. trachea
e. tube feet

The water vascular system of sea stars functions in
a. circulation of gasses and nutrients.
b. digestion.
c. locomotion.
d. reproduction.
e. Both a and c are correct.