This document provides information on the characteristics and classification of different animal groups. It discusses the key characteristics of animals, including being eukaryotic, multicellular, and heterotrophic organisms. Major animal groups are divided into vertebrates, which have backbones, and invertebrates, which do not. Several animal phyla are described, including their distinguishing features. These phyla include porifera, cnidaria, platyhelminths, nematoda, annelida, molluska, echinodermata, arthropoda, and chordata. Examples are given for representative animals from each phylum.

1. Antoniette B. Geolina
Biology Teacher

3. CHARACTERISTICS OF
AN ANIMAL
 EUKARYOTE
- Organism with membrane
-bound nucleus
 MULTICELLULAR
- Organism composed of
many cells

4. CHARACTERISTICS OF
AN ANIMAL
 HETEROTROPH
- Organism that can’t
make their own food
- Absence of chloroplast
- No cell wall

5. MAJOR GROUPS OF
ANIMALS
Vertebrates
- Animals with backbones
 Invertebrates
- Animals w/out backbones

6. CLASSIFICATION
• PORIFERA
(PORE-BEARING ANIMALS)
• CNIDARIA
(STINGING ANIMALS)
• PLATYHELMINTHES
(FLATWORMS)
• NEMATODA
(ROUND WORMS)
• ANNELIDA
(SEGMENTED WORMS)

7. CLASSIFICATION
• MOLLUSKA
(SOFT-BODIED ANIMALS)
• ECHINODERMATA
(SPINY SKIN ANIMALS)
• ARTHROPODA
(JOINTED LEG ANIMALS)
• CHORDATA
(with NOTOCHORD)

8. CHARACTERISTICS OF
PORIFERS
 Have pores
 Have skeleton of silicon or
calcium containing spicules
 Have body cavity
 Have osculum, large opening
at the top of the sponge body

9. Tube Basket
sponge sponge
Yellow tube Tube Cloud
sponge sponge sponges
PHYLUM PORIFERA
Basket
Glass Vase
sponges
sponge sponge

10. CHARACTERISTICS OF
CNIDARIANS
 Are hollow-bodied
animals
 Have nematocysts,
specialized stinging cells
 Have tentacles

11. PHYLUM CNIDARIA
Jelly
fish
Portuguese
man of war
corals
hydra
Jelly
fish Lizard island coral corals

12. CHARACTERISTICS OF
FLATWORMS
 Are long ribbon-shaped
worms
 Are free living while others
are parasitic
 Live in freshwater or sea
water

13. PHYLUM PLATYHELMINTHES
planaria
tapeworm
flukes

14. CHARACTERISTICS OF
NEMATODES
 Are long, slender,
smooth-bodied worms
 Have mouth and anus
 Live in soil and some are
parasitic

15. PHYLUM NEMATODA
ascaris
pinworms
hookworm

16. CHARACTERISTICS OF
ANNELIDS
 Have segmented bodies
 Most are burrowers in
the sand
 Some are
hermaphrodite

17. PHYLUM ANNELIDA
Marine annelid
earthworm
leech

18. CHARACTERISTICS OF
MOLLUSKS
 Are soft-bodied animals
 Have protective shells
 Have a mantle which
secretes the shells

19. PHYLUM MOLLUSKA
squid
snails
slugs
cuttlefish
oysters octopus

20. CHARACTERISTICS OF
ECHINODERMS
 Have hard bodies covered
with spines
 Have no head nor tails and
have no left nor right
 Have mouth and anus at its
top and bottom ends

21. Star fish
Sea urchin
Sea Sea urchin
cucumber
PHYLUM
ECHINODERMATA
Sea star Sea urchin

22. CHARACTERISTICS OF
ARTHROPODS
 Have jointed legs
 Have exoskeleton
 Have segmented bodies
with 2 or 3 regions
 Most have antennae

23. PHYLUM ARTHROPODA
Millipede-
class Diplopoda Crabs-
Centipede-
class Chilopoda class Crustacea
Scorpion- grasshopper
class Arachnida
Class Insecta
Spider

24. CHARACTERISTICS OF
CHORDATES
 Have a notochord at
certain stage of their life
cycle
 Have gill slits and a tail
at a stage in their
development

25. PHYLUM CHORDATA
Class Agnatha Class Chondrichthyes
Lamprey sharks ray
Class Reptilia Class Osteichthyes
crocodile snakes Sea horse milkfish

26. PHYLUM CHORDATA
Class Amphibia Class Aves
Tomato frog toad parrot
Class Mammalia
Pregnant
dolphin lion woman kangaroo

27. THANK YOU
FOR
LISTENING!