Invertebrates:
Group
Sub-group
Do they have legs?
If yes, how many?
If no, what do they have
instead to help them move?
Jointed??
Do they
have shells
?
Do they have a
Segmented
body?
Number of
antennae?
Do they have an
Exoskeleton?
How many
pairs
Describe
Describe
Do they have
wings?
If yes,
How many
pairs
examples
Molluscs
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No, they have a muscular
foot
Some do
no
no
no
no
Slugs, snails,
octopus
Annelids
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No, they have tiny bristles
call chatae
no
Yes, bodies
divided into
rungs
no
no
no
Earth woms
Insects
Yes, they have six jointed
legs
no
Three
segments,
head, thorex
and abdomen
Most have
two pair
One pair
yes
locust
Arachnids
Eight jointed legs
no
yes
no
no
yes
Spider
scorpian
Crustacean
s
More than four pairs of
legs
no
yes
no
Two pairs
yes
Crab, lobster
woodlice
Myriapods
Many pairs fo legs
no
yes
no
One pair
yes
Milipeads
centipedes
Arthropods