No backbone!1 Copy the table and write the names of

these invertebrates in the correct column.

7De

Arthropods Echinoderms Molluscs

slug

scorpion

butterfly

weevil

fly

snail

starfish

sea urchin

brittle star

crab

No backbone!2 Look at these animals. For each one

write down which group you think it belongs to and why.

7De

leech

lobster

No backbone!

3 For each of these lists of organisms, write down which is the odd one out and why.

a) snail, reindeer, pig, oak tree, sponge

b) tapeworm, slug, wasp, eagle, starfish

c) sea urchin, fly, spider, ant, lobster

d) dolphin, salmon, seagull, lobster, crocodile

e) bear, horse, pig, hamster, frog

7De

No backbone!1 Copy the table and write the names of

these invertebrates in the correct column:

weevil, sea urchin, slug, butterfly, scorpion, crap, brittle star, fly, snail, starfish.

7De

Arthropods Echinoderms Molluscs

butterfly brittle star slug

crab sea urchin snail

scorpion starfish

weevil

fly

No backbone!2 Look at these animals. For each one

write down which group you think it belongs to and why.

7De

Lobster is an arthropod: jointed legs, hard outer body covering.

Leech is an annelid: round worm-like body in sections.

leechlobster

No backbone!3 For each of these lists of organisms,

write down which is the odd one out and why.a) snail, reindeer, pig, oak tree, spongeoak tree: the others are animalsb) tapeworm, slug, wasp, eagle, starfish

eagle: the others are invertebratesc) sea urchin, fly, spider, ant, lobster

sea urchin: the others are arthropods

7De

No backbone!

3 For each of these lists of organisms, write down which is the odd one out and why.

d) dolphin, salmon, seagull, lobster, crocodile

lobster: the others are vertebrates

e) bear, horse, pig, hamster, frog

frog: the others are mammals

7De