K.HARISANKAR

GHS

SANTHIPURAM

IMPORTANCE OF ANIMAL CLASSIFICATION

• So far, over 10 lakhs of animal species have been identified and described.

They show a lot of diversity in structure, habits, habitats and life styles. Hence, it is very essential that every organism be given a name and classified in a systematic way. A systematic classification of organisms will help for a better understanding of the diversity of organisms and their relations.

LINNAEUS

ARISTOTLE

PROTOZOA1. The term Protozoa refers to “first

animals”.

2. Protozoans were first discovered by Anton Van Leeuwenhoek in 1671.

3. These are single celled animals.

E.g. Amoeba

Paramoecium

Euglena.

EUGLENA PARAMOECIUM

AMOEBA

PORIFERA 1. These are multicellural

organisms

2. Many minute pores are present on their body.

3. They remain fixed, attached to a substatum.

Eg. SpongesSPONGES

Life Cycle of sponge

CY

CIN

GR

OU

P

COELENTERATA 1. Body is made up of two layers.

They are diploblastic animals.

2. These are have tentacles are present around the mouth.

3. Body cavity is called gastrovscular cavity or coelenteron. Coelom is absent.

HYDRA

SEA ANIMONE

GR

EE

N H

YD

RA

PLATYHELMINTHES1. These are leaf and ribbon

like flattened worms.

2. In the body 3 layers are present, so they are called triploblastic.

EX. Tape warm

Fasiola.

TAPE WARM

FASIOLA

NEMATHELMINTHES

1. The body is cylindrical, round in shape.

2. Cuticle covers the body.

3. This cavity is formed between body wall and the digestive system.

Eg. Round warms. (Ascoris)

BLOOD FLUKE EN

TIR

OB

IUS

ANNELIDA1. Body is divided into ring-like

segments.

2. Various organs are arranged metamerically in the body.

3. Body wall is covered by cuticle.

4. All are triploblastic.

Eg.Earth worm.

Leech.

EARTH WARMS

BLOOD SUCCER

LE

EC

H

ARTHROPODA1. The body is differentiated

into Head, Thorax and Abdomen.

2. All arthropods have jointed legs.

3. Body is covered by chitinous exoskeleton.

Eg. Centipede, Scorpion, Arthropod a, Cockroach, housefly.

CENTIPEDEHOUSEFLY

ARACHNAID

ANTSCORPION

BUTTER FLY HONEY BEE

1. More often the soft body is enclose hard shell.

2. They live in sea and fresh water.

3. Animals belonging to Mollusca were first discovered by Aristotle.

4. Locomotion is by a muscular foot.

Eg. Snail, Pila,Octopus

OCTOPUS

SNAILLIONED CHITON

ECHINODERMATA

1. These are marine animals.

2. They have spiny projections on their body.

3. Adults exhibit pentamerous radial symmetry.

Eg. Starfish

Antedon

STAR FISHANTEDON

STAR FISH

PISCES

1. These are aquatic animals.

2. The skin is covered with scales.

3. These animals have two chambered heart.

4. The body temperature of these animals is not constant and changes with sorroundings. So they are called cold-blooded animals.

Eg. Shark

SHARK

AMPHIBIA1. They live both in water

and on land.

2. The skin is moist and without scales.

3. These animals have three chambered heart and they are also cold-blooded aniimals.

Eg. Frog.

REPTILES1. The body is covered with

scales.

2. Two pairs of llimbs are present.

3. These animals also have three chambered heart and they are also cold-blooded animals

Eg. Lizard, Snake, Crocodile.

viper

crocodile

REPTILES

AVES

1. The body is covered with feathers.

2. The fore-limbs are modified into wings to fly in air.

3. The mouth extens forwards in the shape of a beak.

4. These animals have four chambered heart and they are warm-blooded animals.

Eg. Sparrow, Pigeon, Peacock.

OSTRICH

PARROT

AVES

MAMMALS1. The body is covered with

hair.

2. They have Mammary glands, four kinds of teeth .

3. They are warm-blooded animals.

4. Diaphragm and external ear present.

Eg. Man, Monkey, Blue whale,

DOLPHIN

MAMMALS

ANIMAL CLASIFICATION CHART

INVERTIBRATES CHART

VERTIBRATES CHART

ACKNOWLEDGEMENT1. 6Th,8ThCLASSESSCIENCE TEXT BOOKS

2. INTERMEDIATE ZOOLOGY TEXT BOOKS.

3. MICROSOFT ENCARTA

4. www.bestanimations.com

5. www.fg.a.com

6. www.a1freesoundeffects.com

7. www.georgetown.edu

8. www.junglewalk.com

9. www.weebay.com

10. www.animatiofactory.com