This document classifies and describes different types of animals. It divides animals into two main groups: vertebrates and invertebrates. Within vertebrates, it discusses the reproduction methods of mammals, reptiles, birds, amphibians and fish. It also describes several invertebrate groups including protozoa, coelenterates, flatworms, arthropods, annelid worms, mollusks and echinoderms. Finally, it notes that mammals and birds are warm-blooded while reptiles, amphibians and fish are cold-blooded.

1. UNIVERSIDAD CENTRAL DEL
ECUADOR
FACULTAD DE FILOSOFÍA LETRAS
Y CIENCIAS DE LA EDUCACIÓN
ESCUELA DE IDIOMAS

2. TEMA: CLASSIFICATION OF
ANIMALS
AUTORAS: ELIZABETH SIMBAÑA
VICTORIA VIDAL
CARRERA: PLURILINGÜE
CURSO: 5º SEMESTRE

3. CLASSIFICATION OF ANIMALS
The animals can be classed in
vertebrates and invertebrates.
Vertebrates:
Animals with a backbone or spinal column.
Invertebrates:
Animals without a Backbone or Spinal Column.

4. THE VERTEBRATES

6. REPRODUCTION
Most baby mammals grow inside their
mother until they are born. This is
something that makes mammals different,
because most other kinds of animals do
something else...

8. Reptiles usually lay
eggs, and the babies
then grown inside
the eggs until they
are ready to come
out.

10. Birds also lay eggs, with a very
hard outer shell. Birds
generally lay 1 to 17 eggs at a
time.

12. Amphibians lay thousands and sometimes millions of
small, soft eggs, and they lay them in the water! The
eggs are jelly-like.
Amphibian means "double life"... the early part of an
amphibian's life is spent in the water, and usually as
they get older then they also spend time on land.
Think of a tadpole turning into a frog!!

14. Fish also lay many eggs -
sometimes millions of tiny eggs!
They are also laid in the water.

16. THE PROTOZOA
Protozoa are simple, single-celled
animals.
They are the smallest of all
animals.
Most protozoa are microscopic
in size, and can only be seen
under a microscope.

17. COELENTERATES
Presence of a network of
nerves spread all over the
body.
Radially
symmetrical, diploblastic
multicellular animals with a
tissue grade of organisation.
Body has a mouth at
the oral end which
leads into a spacious
cavity called
gastrovascular cavity
or coelenteron.

18. FLATWORMS
Mostly they feed on animals
and other smaller life forms.
Bilaterally symmetrical, body
having 3 layers of tissues with
organs and organelles.
Has normally a nervous system of
longitudinal fibres rather than a net.

19. ARTHROPODS
Arthropods have limbs with joints that allow
them to move
Their body cavity contains the nervous system,
circulatory system, reproductive system and
digestive system.
They also have an exoskeleton, which is a hard,
external skeleton.

20. ANNELID WORMS
They have very well-
developed internal organs.
Annelids have bodies that are divided into
segments.
One common
characteristic of annelids
is that they don't have any
limbs.

21. MOLLUSKS
Some mollusks live on land, such as the snail
and slug.
Some mollusks live on land, such as the snail
and slug.
Most mollusks have a soft, skin-like organ
covered with a hard outside shell.

22. ECHINODERMS
Most echinoderms have arms or spines that
radiate from the center of their body.
Echinoderms are marine animals that live in the
ocean.
Common echinoderms include the sea star, sea
urchin, sand dollar and sea cucumber.
The central body contains their organs, and
their mouth for feeding.

23. Mammals and birds are warm-
blooded, which means that they can make
their own body heat even when it is cold
outside. Whether it is sunny and hot
outside or there is a snowstorm and it is
very cold, warm-blooded animals have
body temperatures that usually stay the
same.

25. Cold-blooded animals, like reptiles,
amphibians, and fish, become hotter and
colder, depending on the the temperature
outside. For example, when the sun sets
at night, their bodies are cooler because it
is less warm outside. When the sun is out,
however, their bodies soak up the heat
and become warmer.