The document discusses the differences between vertebrates and invertebrates, highlighting that invertebrates lack a skeleton and are more numerous, while vertebrates can be cold-blooded or warm-blooded. It categorizes vertebrates into classes such as amphibians, fish, reptiles, birds, and mammals, detailing their characteristics and examples. The relationship between body temperature regulation and environmental factors for both groups is also noted.

2. Vertebrates or Invertebrates
Invertebrates do not have
a
skeleton. Some examples of
these are spiders, flies and
caterpillars.
I n v e r † e b r a † e s -
Vertebrates are often larger
arid have more complex
bodies than invertebrates.
However, there are many
more invertebrates than
vertebrates.

3. .
Vertebrates
Cold-blooded vertebrates depend on iheir surroundings to keep
their body temperature. When there is no sun, and the air is cold,
the animal gels cold. When it is sunny and hot, the animal gets
hot, and generally more active.
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4. .
Vertebrates
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• Warm-blooded vertebrates are types of animals that regulate
their own body temperature and they normally have layers of fat,
flatters or fur. Mammals and birds are warn-blooded.

5. Vertebrate classes
amphibians moist permeable
skin
fish gills, wet
scales
reptiles dry scales
birds feathers,
beaks
mammals fur, produce milk
frog, newt,
salamander
goldfsh,shak,cod
crocodile, lizard,
snake
budgerigar, sparrow,
ostrich
rabbit, kangaroo,
human, dolphin q !

6. • They have scales and
fins.
lay eggs (sharks are fish, but
they give birth to live

7. •Amphibians are cold-
blooded and live in water as
tadpoles (breathing through
gills) and on land as adults
(breathing with lungs).

8. • Reptiles are cold-blooded and
â- bréathe with lungs. They have
scales, and most lay eggs.
• Reptiles include snakes,
turtles
i and tortoi9es, crocodiles and
' alligators, and lizards.
• Dinosaurs were reptiles,
although some scientists believe that
some were warn bloode‹£
• Reptiles are more common in
the tropics than in warm regions
and are not found in polar areas.
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9. ough any,
•Because birds are wan-
blooded, their eggs have to
be incubated to keep the

10. blooded, and are
nourished
most are born live
(however, the platypus
lays
• Most mammals also
have