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How
Animals Feed
Reference
chapter
Question
4
HTML version
PDF version
Read the information and answer the questions which follow
it in the spaces provided.
"The adult mussel and the adult barnacle are both
filter feeders. They live in the intertidal zone of a rocky seashore.
They can be found attached to rocks and stones. The adults do not move
once they are attached to a solid surface. When the tide is in the
seawater covers both animals and they start to feed. The barnacle is
surrounded by a hard, chalky cover and the mussel lives inside two
halves of a tough shell."
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Questions |
| (a) What does a filter feeder living in the sea actually
eat? |
| (b) What is an intertidal zone? |
| (c) Why do you think that the mussel and the barnacle are
able to stay in one place all of their lives when most animals have to
move to find their food? |
(d) Mussels are found in large numbers in mussel beds.
There are 800 mussels in 1m2 in a mussel bed. Each mussel
filters 70dm3 of sea water each day.
How much sea water is filtered in 1 hectare (10000m2 )each
day? |
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© Paul Billiet, Shirley
Burchill 2008 |
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