INVERTEBRATES

Invertebrates

They don't have a backbone or an skeleton.

ARTHROPODS

• This is the biggest group of invertebrates.
• There are four subgroups: CRUSTACEANS, INSECTS, MYRIAPODS and ARACHNIDS.

MOLLUSCS

• This large group of invertebrates is divided into three subgroups: GASTROPODS, BIVALVES and CEPHALOPODS.

OTHERINVERTEBRATE GROUPS

• There are other groups of invertebrates that include a variety of different animals.

CRUSTACEANS

• Its body is divided into a CEPHALOTHORAX and an ABDOMEN.
• They have a THICK EXOSKELETON.
• They have 10 LEGS and the front pair of legs has CLAWS.
• They have 4 ANTENNAE.

INSECTS

• They have three body parts: a HEAD, a THORAX and an ABDOMEN..
• They have TWO ANTENNAE, WINGS and SIX LEGS.

MYRIAPODS

• They have LONG, THIN and SEGMENTED BODIES.
• They have LOTS OF LEGS and 2 ANTENNAE.
• They live in DARK PLACES.

ARACHNIDS

• They have two body parts: a CEPHALOTHORAX (head and thorax) and an ABDOMEN.
• They have 8 LEGS.
• Most have 8 EYES.

GASTROPODS

• They have a SOFT BODY.
• Some have a PROTECTIVE SHELL.
• They have TWO EYES on the end of antennae.
• They live ON LAND and IN WATER.

BIVALVES

• They have a soft body.
• They have two shells.
• They live in water.

CEPHALOPODS

• They have a SOFT BODY.
• Most don't have an EXTERNAL SHELL.
• They have a BIG HEAD with TENTACLES
• They live IN WATER.

ECHINODERMS

ANNELIDS

CNIDARIANS

Elena Lópezhttps://elhpedroduque.blogspot.com/

Crabs

Ants

Millipedes

Spiders

Snails

Mussels

Squids

Starfish

Worms

Jellyfish