Worksheet 4.6A
Sorting invertebrates
into groups
Each of the animals described below is an invertebrate. Each one belongs to one of these groups:
molluscs
annelids
arthropods
Each of the arthropods belongs to one of these groups:
insects
arachnids
crustaceans
myriapods
Decide which group or groups each animal belongs to.
Animal P has eight jointed legs. It has an outer skeleton. It does not have wings.
Animal P belongs to ..........................................................................................................................
Animal Q has no obvious legs. It has a long, thin body made up of many segments. It is difficult
to tell which end is its head and which is its tail.
Animal Q belongs to .........................................................................................................................
Animal R has more than 20 pairs of jointed legs and a segmented body. It runs fast and hunts
smaller animals to kill and eat. It has one pair of antennae.
Animal R belongs to .........................................................................................................................
Animal S has no legs. Instead, it has a strong muscular foot which it uses to move around. It does
not have a shell. Its body is not made up of segments.
Animal S belongs to ..........................................................................................................................
Animal T has many jointed legs and a segmented body. It moves slowly, and eats fruit and leaves.
It has one pair of antennae.
Animal T belongs to ..........................................................................................................................
Animal U has a very hard outer skeleton. It has ten jointed legs and two pairs of antennae. It
lives in the sea.
Animal U belongs to .........................................................................................................................
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