grade 3 science lesson by Mrs. Aisha

1. How are
offspring like
their
?parents

2. Both alike and different
Most young plants and animals
grow to look like their parents.
Some plants and animals look
like their parents even when
. they are very young

3. antelope

4. The young antelope shares many characteristics with its
parents.
1- it has the same body shape as its parent.
2- its . fur is about the same length too
.The young antelope is also different in some ways
its horn are much smaller than its parent`s - 1
.horns
.its horn will grow larger as it gets older- 2
but its horn may not have the exact shape -3
.or size of its parent`s horn

5. Inherited
characteristic
s

6. Young plants and animals are called offspring.
Inherit means to receive from a
parent.
An inherited characteristic is one that is
passed on from parents to their offspring.
An inherited characteristic = trait

7. color
Animals inherit traits
shape of their
body parts
leaf
shape
plants inherit traits
flower color

8. The traits of an animal or plant
often help it to survive in its
.environment
Humans may also inherit traits.
You may have inherited traits
such as hair color and eye color
.from your parents

9. Acquired
characteristic
s

10. Suppose a woman has her ears pierced. Her
offspring will not be born with pierced ears.
*Pierced ears are an acquired
characteristics.
You acquire, or get, them during your
lifetime

11. A plant`s leaves may turn brown if it
gets too much sun.
*brown leaves are an acquired
characteristics.
The plant`s offspring will not have
.brown leaves

12. The scars on this elephant seal`s body
are from fighting other seals. The scars
. are an acquired characteristics

13. Inherited
Behavior

14. Behaviors are things that animals do.
An instinct: is a behavior that an
animal is born able to do.
Instincts . are inherited behaviors

15. Baby birds open their mouths when a
.parent brings food

16. Puppies are born knowing how to suck
.milk

17. Some butterflies migrate to warm
places . to survive the winter

18. Bats hibernate during winter.
When they hibernate their body, their
body systems slow down. This save
.energy

19. Animals learn some behaviors from
their . parents or other adult
chimpanzees learn how to use a stick as a - 1
. tool
.they use stick to catch and eat insects- 2
. they learn which foods are safe to eat- 3

20. Humans learn many behaviors from
their parents or other adults.
1- you learned how to read and do
math in school.
2-you learned how to tie your
shoelaces or eat with a spoon.
You were not born knowing how to do
.these things

21. Small
Differences in
Traits

22. Different animals of the same kind
can look and act different.
Two brown rabbits can have brown
offspring. They may also have white
.or gray offspring

23. Differences that can help an animal
Some differences in the way an animal looks
or acts can help . it survive and reproduce
rock pocket mice live in rocky habitats in the
.desert areas

24. This mouse has light -1
. brown fur
Its color matches the -2
. rocks in its habitat
this mouse has - 1
. black fur
its color matches - 2
the rocks of its
. habitat

25. Differences that can harm an animal
Small differences in traits can harm an
. animal
The light brown offspring will be hard for -1
. owls to see
But black mice are easier to see on light -2
. brown rocks
The black offspring are more likely to be -3
eaten by owls. They are less likely to
. survive and reproduce