4/3/2017
Animal Phyla Notes
Part 1
9 Animal Phyla
• The Kingdom Animalia are
divided into these 9 Phylum's
1) Porifera
2) Cnidaria
3) Platyhelminthes
4) Nematoda
5) Annelida
6)
7)
8)
9)
Mollusca
Arthropods
Echinodermata
Chordata
1
4/3/2017
1) Porifera
• Sponges are an example of
organisms in the Phyla Porifera.
Sponges cannot make their own
food and are referred to as
simple animals.
Characteristics of Porifera
- Asymmetry
-Live in water floating or
attached to one place
-Filter feeders
-No nervous system or
digestive tract.
Water flows in the side of the
sponge and collar cells filter
particles of food from water
and digest it.
2
4/3/2017
Giant Barrel Sponge
Xestospongia muta
Stove-pipe Sponge
Aplysina archeri
3
4/3/2017
2) Cnidaria
• Cnidarians are more
complex than sponges,
have complex tissues, a
gut for digesting food and
a nervous system.
Characteristics of Cnidarians
- Radial Symmetry
- All live in water floating
or attached to one place
- Most have tentacles
with stinging cells called
nematocysts.
3 Types of Cnidarians
- Hydras
- Jellyfish & Sea Anemones
- Corals
4
4/3/2017
Sea Anenome
Portugese Man of War
Physalia physalis
5
4/3/2017
Ivory Bush Coral
Oculina varicosa
Giant Green Anenome
Oculina varicosa
3) Platyhelminthes (flatworms)
One of the 3 worm
Phyla’s that we are going
to be discussing
6
4/3/2017
Characteristics of Platyhelminthes
-
Bilateral Symmetry
Most live in water
Have a flattened body
Some are parasitic
3 Types of Platyheminthes
- Planarians
- Flukes
- Tapeworms
4) Nemotoda (roundworms)
The second of the worm
Phyla we will discuss
7
4/3/2017
Characteristics of Nemotoda
•
•
•
•
(roundworms)
Bilateral Symmetry
Live in water or on land
Have a round body
Some are parasitic
Examples of Nemotoda
- Pinworms
- Heartworms
5) Annelida
• Annelids are different from other phylum’s
of worms because it has body segments.
Segments are identical repeating body
parts.
8
4/3/2017
Characteristics of Annelids
• Bilateral symmetry
• Live in water or on land
Bodies are divided into
segments that have
bristles to help them
move
• Few are parasitic
Examples of Annelids
- Earthworm
- Leeches
Leeches Medical Use
9