LAND INVERTEBRATES

• Invertebrate animals have a shell to protect their soft bodies. Some have a hard outside covering called an exoskeleton

Spider

Snail

beetle Wasp

Arthropods:insects

Beetle

GrasshopperGrasshopperAnt

Butterfly

Wasp

Ladybird

Dragonfly

What is an insect?• An insect has a hard outer skeleton

•It has a three part body: head, thorax and abdomen

•It has six legs

•An insect has antennae on his head.

•Most insects have two pairs of wings. • Not all insects fly.

Arachnids: spiders• They have eight legs• They have two main parts• They lay eggs• Their skin is covered with tiny hairs• They make silk using spinnerets on the end of

their abdomens

OCEAN INVERTABRATES Cnidarians

• Jellyfish and anemones are cnidarians• They have been around for millions of

years, they can sting but they are very beautiful.

• Jellyfish can only move vertically and are unable to swim, they rely on currents to move.

MOLLUSKS• They have soft body with no bones.• They have tentacles for feeling and seeing.• They can have one shell: cone snail,limpet

Cone snail

Limpet

Mollusks with two shells

• When they open their shells, water flows over their gills.

• The shell is closed tight for protection

Oyster Scallop Clams

Mollucks with no shell: Cephalpods

• They have to use other protection like tasting bad to predators, coloration or squirting purple ink.

• They move on a “foot” like a snail´s foot

Octopus Cuttlefish Squid

ARTHROPODSCrustaceans

• They have a hard outside covering. As they grow bigger, they have to crawl out of their old skeletons and grow new, bigger ones.

Crab Shrimps Lobster

ECHINODERMS• They have a hard outside covering.

• They move around on tiny tube feet.

Sea stars have Sea Urchins are

five or more arms covered with spines.

Creada la presentación

Por

MªÁngeles Cola

Para segundo ciclo de primaria bilingüe

Science: INVERTEBRATES