9/18 test- invertebrate information

Question 1

Arthopods

Answer 1

invertebrates with exoskeletons (hard outer shell), jointed legs and segmented bodies. Examples: insects, myriapods, crustaceans, arachnids, horseshoe crabs

Question 2

Spongees

Answer 2

simplest of all animals. feed through a filter system

Question 3

Cnidarians

Answer 3

simple aquatic animals like sponges-but they have a nerve system which makes them more complex

Question 4

segmented worms

Answer 4

also known as annelid worms

Question 5

flat worms

Answer 5

simplest of all worms. Example: tapeworms. Tapeworms hide inside animals intestines and make their hosts very sick

Question 6

roundworms

Answer 6

usually so tiny that you can’t see them with your bare eyes

Question 7

mollusks

Answer 7

snails, slugs, clams, octupuses, squids and cuttlefish. Some (like clams) have shells to protect them but others (like slugs) do not. to be a mollusk an animal must have a ribbon like tongue with thousands of tiny, sharp teeth, a protective case or a layer of mantle to house its gills

Question 8

Echinoderms

Answer 8

can only be found in oceans. Examples: starfish, sea urchins, brittle stars, and sea cucumbers. Many have spikes to guard them against their predators