27
Shells, exoskeletons and soft bodies with no protective covering are the
three types of body coverings found in invertebrates. Each one is typical
of a specific type of invertebrate.
Protective body coverings
No protective body covering
Hard shell
Exoskeleton
Examples: molluscs such as snails
and oysters.
Examples: arthropods such as
ants, scorpions and beetles.
Examples: annelids such as
leeches and worms.
2
Classify these invertebrates in your notebook. Write a sentence to describe each one.
mollusc porifera annelid echinoderm
a)
b)
c)
d)
Picture ... shows a/an ... It has ...
3
19
Listen and say
true
or
false
.
a)
We eat some arthropods.
c)
Locusts help farmers by eating their crops.
b)
Bees are an example of arthropods.
d)
Bees carry malaria.
4
Choose one of these molluscs. Find out how it carries out the processes
of interaction, nutrition and reproduction.
snail oyster mussel
5
Draw a diagram of the mollusc you found out about in activity 4.
6
20
QUIZ
Check your learning.
A
C T I V I T I E S
