Animals can be divided into two groups.

Can you guess the groups?

Classification of animals

ANIMALS WITH

BACKBONE

ANIMALS WITHOUT

BACKBONE

VERTEBRATES INVERTEBRATES

Let’s learn about invertebrates!!

oystersponges jellyfish

coral

earthwormstarfish

sea urchin

scorpion

spider

lobster

grasshopper

fly butterflysquid

crab

clam

octopus

snailcentipedes

Can you sort them into groups?

INVERTEBRATE GROUPS

http://images.google.com/imgres?imgurl=http://biology.unm.edu/ccouncil/Biology_203/Images/Protostomes/squid.jpg&imgrefurl=http://biology.unm.edu/ccouncil/Biology_203/Summaries/Protostomes.htm&usg=__pvuAmy__orXA6Bn90vLcwd25i2o=&h=349&w=467&sz=155&hl=es&start=1&um=1&tbnid=FQnqe5_sSQUomM:&tbnh=96&tbnw=128&prev=/images%3Fq%3Dsquid%26gbv%3D2%26hl%3Des%26lr%3D%26um%3D1

ARACHNIDSINSECTS CRUSTACEANS MYRIAPODS

grasshopper

They have an external exoskeleton.

spider lobster centipedes

They have antennae and eyes.

The exoskeleton is made up of small

plates.

The exoskeleton covers the body, legs and antennae.

INSECTS

An insect’s body is divided into 3 parts:

headthorax

abdomen

Many insects have wings

They are found in many different habitats

ARACHNIDS• They have 8 legs.• The body is divided into 2 parts: the abdomen and the

cephalothorax.

• They use their legs for holding their pray and feeding.

legs

cephalothorax

abdomen

CRUSTACEANS• They live in the ocean and other waters.• They have a hard shell that protects their body.• The body is divided into 2 parts: the head and the abdomen. • Many crustaceans also have claws that help with crawling and

eating. claws

head

legs

abdomen

shell

MYRIAPODS• They have long bodies with many legs.• The head has 2 short antennae.

legs

head

antennae