How Animals Live?

How do different animals live, grow, and change?

Classifying Vertebrates

All animals need water, oxygen, food, and shelter

A body feature passed on to

Those that don ’ t have a backbone.

a trait. Traits can include things an

A backbone is a series of bones that run down the

animal does.

An animal that has a backbone is called a vertebrate

What is the series of bones that runs down my back called?

A. Root stem B. backbone C. Vertebrate A Vertebrate such as this horse has a skeleton inside its body.

Mammals

Vertebrates can be classified into several smaller groups. One of these groups is the mammal group.

A mammal is an animal that has hair/fur and produces milk for its young.

They need oxygen, a gas in the air, to live and they breath the air with their lungs.

Most mammals have a thick coat of hair or fur that Traps air against their body for warmth.

What are two traits of Mammals?

Sea lions are mammals that live both in water and on land. Even Mammals that live in water have lungs and most breath air.

Birds

A bird is a vertebrate that has feathers, wings, and two legs.

Birds lay eggs that have hard shells.

Most birds can fly.

Feathers keep a bird warm, but are light so they do not weigh the bird down.

How are the bodies of mammals and birds alike and different?

Bird of Paradise are found in western Indonesia, Papua New Guinea, and eastern Australia. The members of this family are perhaps best known for the plumage of the males of most species.

Fish

Fish are vertebrates that live in water.

Fish have long, narrow bodies that make it easy to move through water.

Fish are vertebrates that live in water.

Most fish are covered with scales that protect them.

Like all animals fish need oxygen to live, but they don ’ t have lungs. Instead they breath through gills.

What are two traits of fish?

All fish have backbones. Sharks and Rays have backbones Made of cartilage, a material that is softer than bone.

Amphibians

An amphibian is a vertebrate that starts life in water and then lives on land as an adult.

Amphibians lay eggs in water and their young breath through gills and have tails to help them swim.

As the young grow, their bodies change. Lungs and legs grow and gills disappear.

After an amphibians body changes, they live on land.

An animal lives in water, has fur, and breathes with lungs. Would you classify it as a bird, a mammal, a fish, or an amphibian?

Frogs have wet, smooth skin. Wet skin prevents their bodies from drying out on land.

Reptiles

A reptile has dry, scaly, skin and lays eggs on land.

The scales protect them from the hot sun Reptiles can live in many different environments.

Some use legs to move, others slither on the ground.

All reptiles breath with lungs and reptiles that spend a lot of time in water must stick their noses out to breath.

Why do alligators and crocodiles have to stick their noses out of the water?

Directions: If you think the animal is a mammal, circle it. If it ’ s a fish, put an X through it. If you think it ’ s a bird, box it. If you think it is a reptile, triangle it.

Animal Classification Game

Invertebrates

Animals without a backbone includes sea stars, butterflies, and spiders Many invertebrates are very small a soft sac filled with liquid supports worms and sea jellies Insects and other arthropods have a hard covering on the outside of their bodies.

Major Kinds of Invertebrate Animals

Directions: If you think the animal is a sea jelly, circle it. If it ’ s a worm, put an X through it. If you think it ’ s a Mollusk, box it. If you think it is a arthropod, triangle it.

Chapter two lesson one and two

• Quiz – log in to Mr. Elliott ’ s website and go to 3 rd grade science interactive. At the very bottom under files you will find Ch. 2 1 quiz. Open it and finish the quiz. Print off when finished.

Amphibian life cycle

Frog Eggs

Tadpole

Tadpole changing into frog

Adult frog

Salamander turning into an adult

adult Salamander

Assignment:

Make an illustration that shows the life cycle of an amphibian.

The picture should show these stages: Egg Young living in water Changing into an adult Adult living on land Please choose a frog, a toad, or a salamander.