Life Science

1
Life Science

• Unit A Chapter 2
• Animals

2
Animals with Bones

• Scientists group animals by body parts
• Some animals have bones inside their bodies.
• They are called vertebrates
• Mammals
• Reptiles
• Amphibians
• Birds
• Fish

3
External Characteristics

• Scientists classify animals within the vertebrate
  group by other external characteristics.

4
Mammals

• have fur or hair
• breathe with lungs
• Have live young
• Feed young milk from their bodies

5
Birds

• have feathers
• breathe with lungs
• have back bones

6
Reptiles

• have dry, scaly skin
• breathe with lungs
• have backbones

7
Amphibians

• have moist, smooth skin
• breathe with gills first, then lungs
• have backbones

8
Fish

• have scales
• breathe with gills
• have backbones

9
Animals without bones

• Some animals have parts like bones outside their
  bodies.
• They are called invertebrates.
• They have no backbones.
• Insects
• Worms
• Snails
• Squids
• octopus

10
Insects

• do not have inner bones
• have outer skeleton---exoskeleton
• breathe with air tubes

11
Life Cycle

• All the parts of an animals life from birth to
  death

12
Life Cycle of a Frog
Egg/spawn
tadpole
Adult frog
Back legs grow
Front legs grow
13
Life Cycle of a Chicken
14
Life Cycle of a Butterfly
15
Animal habitats

• Where an animal lives
• Temperatures are differenthot or cold
• Rainfall is differentcan be wet or dry
• An animals food, water, and shelter are found in
  its habitat
• If the habitat changes, the animal can become
• This means there are very few of that animal
  still living.

endangered.
16
Food Chain--plants use energy from the sun to
make food--animals eat plants for food larger
animals eat the smaller animals for food
17
Behavior
An action of an animal that can help it survive
18
Camouflageprotective coloring that helps the
animal blend intoits surroundings
19
How do fish get oxygen?
Click the fish to learn how fish breathe
20
A webbed foot is best adapted for

1. catching and holding insects
2. moving around in the water
3. holding on to small branches
4. digging burrows in hard ground

21
All of the characteristics listed for a scorpion
are useful for survival in a hot, dry climate
EXCEPT-

1. 1
2. 2
3. 3
4. 4

22
What is the main function of the wings on a bird?

1. fighting other birds
2. hiding from other animals
3. flying
4. picking up food

23
Why is the tigers fur striped?

1. to keep them warm in the winter
2. to help them hide in the tall grass where they
   live
3. to warn other animals that they are poisonous
4. to keep insects from biting them

24
Which adaptation is most helpful to an animal
that catches other animals for food?

1. thick layer of fat and fur
2. sharp teeth and claws
3. legs that are long and thin
4. tiny eyes and ears

25
A fish has fins and gills because--

1. it lives in water
2. it lives on land
3. it flies in the air
4. it lives underground

26
Why do giraffes have long legs and necks?

1. to drink water more easily
2. to hear the birds at the top of the trees
3. to run faster
4. to reach more leaves on tall trees

27
Why does a squirrel gather and store nuts?

1. to build its home
2. to have food for winter
3. to give away
4. to plant more trees

28
Which of these helps a duck swim in water?

1. a big bill or beak
2. webbed feet
3. wings
4. claws

29
A fox has sharp teeth to help it---

1. run fast
2. catch and eat its food
3. hear well
4. smell for danger

30
What does a fish use to help it swim?

1. arms
2. legs
3. fins
4. toes

31
Owls are asleep during the day and awake at
night. For this reason, they---

1. have sunglasses to see during the day
2. have big eyes to see in the night
3. dont need to eat
4. are scared to fly

32
Lions have sharp teeth to help it to---

1. climb trees
2. breathe
3. run fast
4. tear and eat meat

33
What helps a polar bear live in cold weather?

1. long legs
2. warm, thick fur
3. small feet
4. big eyes

34
What does a bird use its wings for?

1. to fly
2. to swim
3. to walk
4. to hop

35
How are a fish and a duck alike?

1. They both have fins.
2. They both live in a tree.
3. They both eat pizza.
4. They both live in the water.

36
Which of the following is something that a person
NEEDS to live?

1. toys to play with
2. candy to eat
3. a bicycle to ride
4. air to breathe

37
The life cycle of a butterfly has how many stages?

1. 1
2. 2
3. 3
4. 4

38
Which of these animals start life looking like
their mother?

1. frog
2. butterfly
3. cat
4. chicken

39
In the life cycle of a butterfly, which stage is
the caterpillar?

1. 1st
2. 2nd
3. 3rd
4. 4th

40
The tails and fins of a fish help the fish to

1. breathe underwater
2. chew its food
3. see larger fish
4. move in its habitat

41
To survive in their environment, living things--

1. stay the same
2. melt on a hot day
3. grow and change
4. need books to read

42
An earthworm belongs in Box A because it---

1. swims in a pond
2. eats leaves of plants
3. makes its home underground
4. grows fur in the winter

43
The length of the ant is..

1. 0 cm.
2. 1 cm.
3. 2 cm.
4. 3 cm.

44
The best title for the picture would be...

1. Butterflies of the United States
2. Life Cycle of a Worm
3. How Eggs Hatch
4. Life Cycle of a Monarch Butterfly

45
Which animal completes the food chain?

46
Which of these animals begins life in an egg in a
nest?

1. human
2. fish
3. cricket
4. bird