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Test Bank for Marine Biology: Function, Biodiversity, Ecology 2E - page 29 / 44

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Agar is extracted from a

a. Red seaweed

b. Bacterium

c. Green seaweed

d. Brown seaweed

Sea grasses differ from seaweeds

a. In having the ability to spread asexually

b. In having chlorophyll

c. In living on soft sediment

d. In having flowers

Benthic diatoms differ from their planktonic relatives in

a. Being exclusively heterotrophic

b. Living in chains of cells only

c. Being usually bilaterally symmetrical

d. Living only in estuaries

Cyanobacteria

a. Only occur as single cells

b. Are capable of nitrogen fixation

c. Are closely related to fungi

d. Are filamentous in shape, unlike the fungi

Chapter 13

Meiobenthos

a. Are greater than 1 mm in size

b. Are always epifaunal

c. Are smaller than 0.5 mm

d. Are smaller than microbenthos

As the silt-clay content of sediment increases

a. We can tell that the variability of current strength increases

b. The current strength decreases

c. The current strength increases

d. The water depth must increase

An example of a hydrostatic skeleton would be

a. The chitin of an arthropod

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