THE ANIMAL KINGDOM

1
THE ANIMAL KINGDOM
2
The animal kingdom can be dividedinto 9 smaller
groups. Each group is called a phylum.
3
PHYLUM PORIFERASponges
4
Sponges are sessile animals (they spend their
lives attached to rocks)
5
Water enters the small pores of a sponge, travels
through canals, and exits through a large hole at
the top of the sponge.
6
PHYLUM CNIDARIAJellyfish, sea anemones, corals
7
Members of this phylum have tentacles with
stinging cells.
8
Cnidarians can have one of two body shapes an
umbrella-shaped medusa form, like the jellyfish
on the left, or a vase-shaped polyp form, like
the sea anemone on the right.
9
Coral reefs contain many members of Phylum
Cnidaria.
10
PHYLUM PLATYHELMINTHESFlatworms
11
The worms in this phylum are all very thin and
flat, like this parasitic liver fluke.
12
All flatworms, including this planarian, have
bilateral symmetry.
13
Flatworms are the first animals to have a head.
Note the hooks and suckers on the head of this
tapeworm.
14
PHYLUM NEMATODARoundworms
15
Nematodes are not segmented their body surfaces
appear smooth.
16
Many nematodes are parasites, such as this pork
worm named Trichinella.
17
Nematodes have a complete digestive tract, with a
mouth at one end where food enters, and an
opening at the other end where wastes exit.
18
PHYLUM MOLLUSCAClams, snails, squid, octopus
19
Most mollusks have a hard shell covering their
soft bodies.
20
Clams have a wedge-shaped muscular foot used for
locomotion.
21
Mollusks breathe by means of gills.
22
Not all mollusks have shells. This squid does not.
23
This octopus does not have a shell either, but it
is still a mollusk.
24
PHYLUM ANNELIDAEarthworms, sandworms, leeches
25
Annelids have bodies that are segmented (divided
into sections).
26
Annelids have a circulatory system to pump blood.
This earthworm has 5 hearts!
27

• Annelid worms have a body cavity called a
  coelom which provides room for organ development.

28
PHYLUM ARTHROPODACrayfish, lobsters, crabs,
insects, spiders
29
All arthropods, including this tick, have
jointed legs.
30
Arthropods have a crunchy shell called an
exoskeleton.
31
Arthropods have very well-developed sense organs.
32
PHYLUM ECHINODERMATAStarfish, sand dollars, sea
urchins
33
Echinoderms have spiny (prickly) skin.
34
Adult echinoderms have radial symmetry.
35
The bottom of this starfish is covered with tube
feet for locomotion.
36
PHYLUM CHORDATAFish, amphibians, reptiles,
birds, mammals
37
Members of Phylum Chordata have a backbone (they
are vertebrates).
38
Phylum Chordata can be subdivided into 7
classesAGNATHACHONDRICHTHYESOSTEICHTHYESAMPH
IBIAREPTILIAAVESMAMMALIA
39
Class Agnatha includes jawless fish such as
lampreys. They are parasites on other fish.
40
Class Chondrichthyes includes fish whose
skeletons are made of cartilage, such as sharks,
rays, and skates.
41
Class Osteichthyes includes fish whose skeletons
are made of bone.
42
Class Amphibia includes semi-aquatic animals with
moist skin. They must return to the water to
breed.
43
Class Reptilia includes snakes, lizards, turtles,
crocodiles, and iguanas. They have dry, scaly
skin.
44
Members of Class Aves have wings and feathers for
flight.
45
Class Mammalia includes animals with hair or fur.
Females have mammary glands to nurse their young
with milk.
46
THE END