How are the fish at the end of the Silurian different to the fish that were present at its beginning?

a.
They are larger

b.
They are burrowing deeper into the sediment

c.
They have better eyesight

d.
They are better swimmers

e.
They have developed adaptations for moving on land

2.

What are conodonts?

a.
shelled creatures with a lophophore

b.
hard-shelled relatives of squid that were large predators

c.
jawless vertebrates

d.
planktonic suspension feeders that live in colonies

e.
relatives of starfish that were attached to the substrate by long stalks

3.

What separates rugose corals from tabulate corals?

a.
rugose corals can move from reef to reef

b.
rugose corals grow in colonies

c.
rugose corals live in deeper waters

d.
rugose corals can live in fresh water

e.
rugose corals can capture larger prey

  
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