WorksheetsSoft-Bottom Intertidal Zone
Total questions: 11
Worksheet time: 6mins
What type of marine environment is considered a soft-bottom intertidal zone?
sandy beach
mudflat
both answers are correct
What causes the sediments of a soft-bottom intertidal zone to shift?
waves
tides
currents
all answers are correct
What are the most common primary producers for soft-bottom intertidal zones?
seaweeds
lichens
seagrasses
What type of organisms are found in soft-bottom intertidal zones?
epifauna
sessile
infauna
Infauna survive being washed away from waves by
attaching to rocks
digging in the sediment
Mud is composed of
coarse and medium sand
silt and clay
Fine sediments are found where
there is a lot of wave action
there is calm water like sheltered bays
Which type of sediment has lots of organic matter (detritus)?
sand
mud
These animals feed by eating sediment with lots of detritus:
deposit feeders
suspension feeders
These animals filter water that has lots of detritus:
deposit feeders
suspension feeders
Mud that has anaerobic bacteria turns black and smells like rotten eggs because of this by product of the bacteria:
methane
carbon dioxide
hydrogen sulfide
