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Test Bank for Marine Biology: Function, Biodiversity, Ecology 2E - page 27 / 44

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b. No structure capable of gathering food actively

c. Many representatives that are parasitic

d. Only free-living representatives

Nemerteans differ from nematodes in that they

a. Are all suspension feeders

b. Have many non-marine representatives

c. Are all carnivores

d. Live in the deep sea only

Annelids differ from nematodes in

a. Having a complete digestion system

b. Being marine only

c. Having mouthparts

d. Having segments

Members of the Polychaeta

a. Have parapodia

b. Lack setae

c. Are segmented, unlike the Oligochaeta

d. All of the above

The Pogonophora

a. Are worm-like in shape

b. Lack a complete digestive tract

c. Are found in the deep sea

d. All of the above

Torsion

a. Is found in mollusks that lack a radula

b. Is found in only the scaphopods

c. Is an important feature of gastropods

d. Refers to the spiral form of the shell

All arthropods share

a. A calcified internal skeleton

b. A calcified external skeleton

c. An external skeleton composed of chitin

d. A strictly marine habitat

The following is not a crustacean

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