Classifying animals 8

8-It can be a mollusc an annelid a sponge, an echinoderm or cnidarian.

• Molluscs have got soft bodies which are not segmented.

-Some of them have their feet jointed to the head (cephalopods like octopuses, squids, cuttlefishes, etc.) Cephalopods are generally good with camouflage and some of them also use ink to confuse predators.

-Some others have got a shell divided in two parts called valves (bivalves like clams, mussels, oysters, scallops, etc.).

-Finally, there are molluscs with one or no shell (gastropods like the snails or slugs).

• Annelids are worms with a segmented body. Many of them are parasites.

• Sponges are very simple animals without nervous or circulatory system which filter water to get their food.

• Echinoderms have got their body covered with plaques which are usually spiny (starfishes, sea urchins, etc.).

• And finally, cnidarians are the group of jellyfishes, anemones and corals. Most of them have got stingy cells in their skin, so do not touch them!!!!