By Jesús

INVERTEBRATESINVERTEBRATES

They haven’t got a spinal colum or an internal skeleton.

Invertebrate

Vertebrate

Invertebrate have got different body covering Invertebrate have got different body covering : hard shell, exoskeleton and body without : hard shell, exoskeleton and body without protection.protection.

Characteristics: Rigid body covering ,or exoeskeleton. Jointed parts Jointed legs.

The most important groups ofarthropods are:

Insects

Arachnids Crustaceous

Myriapods

Characteristics : Soft body Hard shell Muscular foot

Sponges:

Live in the ocean, they are carnivores. They have tentecles.

Jellyfish and polyps:

Characteristics: They live in the

ocean. They have got

many tiny feet with suction cups.

ECHINODERMS

Characteristics: They are worm with

long, soft bodies. Their body is

divided into many rings or segment

ANNELIDS