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WorksheetsUnit 6: Benthic Zone
Total questions: 19
Worksheet time: 10mins
Bycatch is one of the largest threats to maintaining a healthy marine ecosystem. What is bycatch?
Bycatch is an intentional catch
Bycatch is an accidental and unwanted catch
What class does the squid belong too?
mollusk
bivalve
animal
cephalopod
What are the three main groups of Mollusks?
Gastropods
Cephalopods
Annelids
Myriapods
Bivalves
Mollusks have
bilateral symmetry
radial symmetry
no symmetry
To which group of mollusks this clam belong?
Gastropods
Cephalopods
Bivalves
Arthropods
Which is the group of mollusks that has the shell divided into two valves?
Gastropods
Cephalopods
Bivalves
Porifera
To which group of mollusks this cuttlefish belong?
Cephalopods
Bivalves
Gastropods
Which type of fishing has high rates of bycatch and highly destructive of benthic communities.
Pole Fishing
Long Line Fishing
Purse Seining
Trawling
type of fishing has the lowest rates of bycatch.
Pole Fishing
Long Line Fishing
Purse Seining
Trawling
The main difference between photosynthesis and chemosynthesis is:
Photosynthesis gives off carbon doxide, while chemosynthesis gives off oxygen
photosynthesis happens in the dark, while chemosynthesis happens in light
photosynthesis uses chemicals (hydrogen sulfide) to make food, while chemosynthesis uses light
chemosynthesis uses chemicals (hydrogen sulfide) to make food, while photosynthesis uses sunlight
The organs that produce light in the living creatures to act as a lure are called....
Luciferin
Photophores
Wings
Which terms are true of bivalves such as oysters and clams? (Select ALL that apply)
bilateral symmetry
filter feeder
highly intelligent
invertebrate
have tentacles
