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WorksheetsMarine Coasts and Phylum Mollusca
Total questions: 14
Worksheet time: 8mins
What is a fringing reef ?
A volcanic island
A living reef structure
Something that forms around an island in tropical areas
A single continent made up of corals
A longshore current moves sediment along the shoreline between the surf zone and the upper limit of wave action.
False
True
A groin is structure that extends from beach to the water and help in preventing erosion
True
False
A seawall can protect a property but is responsible for erosion due to deflection of wave energy
False
True
The Pacific Coast -
shows tectonic activity
actively rising
has a higher wave size
All of the above
The Gulf of Mexico
has a larger wave size
a very large tidal range due to its large area
shallowest ocean of the United Sates
None of the above
The Class Bivalvia Consists of
Scallops, Clams, Oysters and mussels
Polychaetes, Earthworms, Peanut worms and Turbellarians
Starfish, Sea Stars, Sea lilies and Ophiuroids
Crabs, Shrimp and Sea Spiders
Cuttlefish have a -
Eight arms no tentacles, globular, sac like body, vestigial shell. Octopus vulgaris.
calcified, internal, chambered, straight, seprate shell or it may be reduced or lost
A Radula is
an organ of defense
an organ for locomotion
an organ to acquire food
a support structure for the mouth
The hemal (circulatory) system of a mollusc is made up of
consists of tracheal tubes and a heart that pumps hemocoel
a heart, a dorsal aorta, blood vessels, blood and a hemocoel.
Gastropods are classified into
a 1 single order
2 orders
3 orders
4 orders
Polyplacophoran means a bearer of _____________ plates
few
many
Backwash carries particles ___________________
On shore
Offshore
Wave erosion of a sea cliff produces a ____________, wave-cut platform visible at low tide. Remnants of the original cliff can _________________ as sea stacks.
shelf-like, protrude
flat, collapse
