5.1 – ___________________ are animals with endoskeletons.
The characteristic that distinguishes vertebrates from other animal is the
_______________________, which is an internal ___________________ system that
grows with the animal. Endoskeletons allow more ______________________________
and ways of moving than the exoskeletons of a ___________________________(name
an example) would. The ribs and skull protect organs such as the ________________,
5.2 – Amphibians and reptiles are adapted for ____________________.
Most AMPHIBIANS have: ________________ pairs of legs. They get oxygen through
their smooth _______________________________ and through _________________.
They lay their eggs _________________.
REPTILES have: _______________________ pairs of legs. They have tough, _________
________________ covered by ____________________. They obtain oxygen through
their ______________________. They lay eggs, which have _________ ___________,
_______________, and _________________.
Most vertebrates are ______________. Most fish move by using __________________
and _____________ to push through water. Most fish have eyes that allow them to
______________________________________________. Fish remove oxygen from
water with respiratory organs called _______________. These are made up of many
_______________________ filled with ______________________.
on _________________.
Amphibians and reptiles are ___________________________, or animals whose body
temperatures change with the environment. For example, a crocodile has been lying in
the sun for hours. When it slides into the cool river, how will its body temperature
change? ________________________________________________________________
Why? __________________________________________________________________
Fish can be classified into three groups. Fill in the table.
5.3 – Birds species live in ___________________________________________.
Group
Traits (at least 2)
Samples (at least 2)
JAWLESS
FISH
Characteristics of BIRDS would include: They have _________________ and a
__________________. They have a pair of scaly ______________ and a pair of
_______________. Their eggs have ______________ shells.
Birds maintain a constant body temperature so they are __________________,
CARTILAGIOUS
FISH
BONY
FISH
unlike fish, reptiles and amphibians which are __________________, Birds
produce body heat from the energy they get from ____________________.
Birds will _________________ to warm up and they will __________ their
feathers to cool down.
Birds have many adaptations for flight. Birds can take in a lot of _______________.
Most fish species reproduce __________________. Most young fish develop inside an
___________. After the eggs are fertilized, the parent fish usually _________________
the eggs to _______________________________. Most fish eggs are surrounded by a
________________________________ that allows _________________ to pass
through. The egg’s yolk provides the developing fish with ________________________.
Birds’ bones are _________________ and some of those bones are ________________
together. Birds have wings covered in _____________________. ______________
feathers aid in flight and _____________ feathers are used as insulation to maintain
body temperature.
5.4 – Mammals live in __________ environments.
Characteristics of MAMMALS would include: They have _______________ some part
of their lives. Most mammals have _____________ specialized for a particular kind of
food. All mammals produce ______________, with which they feed their young.
Three functions of hair are: controls _______________________________, it provides
color for ______________________________; hairs can be sensory structures such as
___________________ or used for ______________________ such as quills.
Body fat can be used to control _______________________________ such as in
dolphins. It can also be a _____________________ for energy particularly those
animals that _______________________.
Mammals reproduce _____________________. Fertilization occurs ____________ the
female’s body. How does the way that mammals feed their young differ from the ways
other animals feed their young? _____________________________________________
_______________________________________________________________________
Why are dolphins classified as mammals instead of fish? __________________
_______________________________________________________________________
Label the dolphin.
Characteristics
Vertebrate
Group
Body
Covering
Ectotherm
Endotherm
Other
Adaptations