INVRTEBRATES - creado desde un Mapa Mental

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invertebrate animals have hard covers that protect their body (shells: 1

piece/ 2 pieces, very hard shells or thinner shells)

Others don´t have any kind of protective covering

All invertebrate animals are oviparous: they are born from eggs

Sponges

are the simplest invertebrates. They can´t move and they live in the

sea.Their bodies are full of holes and their skeleton is made of spiky

fibers.

Echinoderms have their body covered by hard plates and spines. They live in the sea.

Starfish and sea urchins are examples of echinoderms.

​Jellyfish, anemones and corals

have a soft body and tentacles.They feed by catching tiny animals in

their tentacles. Corals live in groups on structures that look like

plants but they are invertebrates animals.

Molluscs have

a soft body and nearly all of them have shells to protect their bodies.

Most molluscs live into the water; just a few ones live on land.

Ex.:Squids, clams, mussels, oysters, octopus...

Arthropods have their body covered by an articulated shell.

The shell is made by lot of hard pieces which cover their bodies.

Some of them, like locusts, have a thin shell. Others as for example crabs, have a thick and hard shell.

There is a big variety of arthropods,they breathe through traqueas or gills and they are oviparous.

The arthropod groups: insects, arachnids,crustaceans and myriapods.

​Worms have a soft and long body. There are:

- earthworms

- seaworms

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