15
Some animals,
like tortoises, have
an external skeleton.
Others, like worms, have
no skeletal system at all!
Reproduction
Our reproductive system enables us to reproduce by having
children. To reproduce, male and female cells combine and
slowly develop into an embryo, and then a
foetus
. The foetus
grows into a baby in its mother’s uterus.
2
In your notebook, match each activity to a system.
a)
eating
1.
muscular system
b)
giving birth
2.
respiratory system
c)
breathing
3.
reproductive system
d)
running
4.
nervous system
e)
smelling
5.
digestive system
3
11
Listen and say
true
or
false
.
4
Choose an animal. Then draw a picture to show how it interacts with its environment.
5
Find out about respiration in fish, dolphins and frogs.
Answer the questions about each one.
a)
Does it absorb oxygen from the air or the water?
b)
What organs does it use?
6
12
QUIZ
Check your learning.
A
C T I V I T I E S
S
C
I
-
F
A
C
T
Male reproductive system
Female reproductive system
