Fish
1. What are the two main
classes into which fish are
divided?
2. From which features do
condrichthyes and
osteichthyes get these names?
3. What are the main features
of fish associated to the
habitat where they live?
4. Comparing to cyclostomes
(primitive vertebrates) what
are the main novelties
presented by fish?
5. How different are the
swimming strategies in
osteichthyes and in
chondrichthyes? Why do
sharks need to agitate their
body to swim while bony
fish do not?
6. How does the swim bladder
of fish work allowing fish
to control their depth under
water?
7. How do fish do gas
exchange?
8. Do fish present an open
or closed circulatory system?
How many chambers does a
fish heart have? How does
blood flow throughout the fish
body?
9. How is excretion done in
fish?
10. What are the lateral lines
of fish?
11. How different are
fecundation in osteichthyes
and in chondrichthyes?
12. Fish identity card. How are
fish characterized according
to examples of representing
beings, basic morphology,
skin, respiration, circulation,
nitrogen waste, thermal
control and types of
reproduction?