2. Animal
Kingdom
Animal Kingdom has by far the most
number of species among all kingdoms.
Although the Animal Kingdom is highly
diverse, all organisms in this kingdom
share three main characteristics: they rely
on other animals and plants for
nourishment, they are mobile, and are
multicellular. They can be both
invertebrates and vertebrates. Alshere are
five groups in animal kingdom and in this
power point we explain you each of the
groups of the animal kingdom.
3. A fish is an animal which
lives and breathes in
water. All fish are
vertebrates and most
breathe through gills and
have fins and scales. Fish
make up about half of all
known vertebrate
species. Fish have been
on the earth for more
than 500 million years.
FISH
4. Birds
Birds are vertebrates with
wings and feathers. Most birds
can fly, using powerful muscles
to flap their wings. Birds’ bodies
are covered with a light, tough
layer of feathers and they have
very light skeletons. Instead of
teeth, they have horn like beaks,
or brills.
5. MAMMALS
Mammals are a group of vertebrate
animals constituting the class Mammalia,
and characterized by the presence of
mammary glands which in females
produce milk for feeding their young, a
neocortex fur or hair, and three middle ear
bones. These characteristics distinguish
them from reptiles and birds, from which
they diverged in the Carboniferous, over
300 million years ago. Around 6,400 extant
species of mammals have been described.
The largest orders are the rodents, bats
and Eulipotyphla
6. Amphibians
Amphibians are a
type of oviparous
animal.
Amphibians are
herbivores when
they are small
and when they
are adults they
eat insects.
Most amphibians live
in freshwater. Young
are born in water and
breathe through gills
7. REPTILES
On the XIII century, a group of unseen animals
were discovered in Europe. They were named
“reptiles”.They were believed to be family of
amphibians, but on the 19th century it was
found out that they were very different animals.
Over the years, many types of reptiles have
been discovered, such as Permian reptiles,
Mesozoic reptiles, and Cenozoic reptiles. In
order to be reptiles, they have to lay eggs and
be vertebrates, never invertebrates. Examples
of reptiles are turtles, lizards, alligators, and
snakes.
