X hits on this document

Word document

Test Bank for Marine Biology: Function, Biodiversity, Ecology 2E - page 37 / 44





37 / 44

a. Of a very low food supply

b. Of anoxic pore water in the sediment

c. Of predation

d. Of high turbidity near the sediment-water interface

Muddy sediments dominated by deposit feeders

a. Tend to be anoxic right at the surface

b. Have low water content

c. Have very high water content far below the sediment- water interface

d. Have very high water content near the sediment-water interface

Trophic group amensalism

a. Is a negative effect caused by predators eating prey

b. Is a negative effect caused by suspension feeders depleting the water column of food for deposit feeders

c. Is a negative effect caused by deposit feeders making the environment unsuitable for suspension feeders

d. None of the above

Patchiness on the sea bed is caused by

a. Disturbance caused by grazing benthic fishes

b. Burrowing structures generated by large burrowing animals

c. Patchy settlement of larvae of benthic invertebrates

d. All of the above

Particulate organic matter

a. Never reaches the deep-sea floor

b. Reaches the deep-sea floor but is always too refractory to be of importance to the benthos

c. Is deposited on the deep-sea floor in a very irregular way, causing patchiness in food supply

d. Arrives on the deep sea floor continuously through the year as a drizzle of food supply for the deep-sea benthos

Following a disturbance, the later stages of succession in a subtidal soft bottom involve

a. Deeper-burrowing species

b. Shallower-burrowing species

c. Epifaunal species

d. Species adapted to anoxia

Until the 1950s deep-sea sampling was hampered by

a. The lack of a sampling device that could dig into the mud

Document info
Document views1861
Page views2717
Page last viewedWed Oct 26 16:09:23 UTC 2016