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Classification PowerPoint PPT Presentation

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Classification. Essential Question. How are animals classified? Vocabulary to know: Classification Vertebrate Invertebrate. Classification?. Animals are separated into groups or categories so that they are more easily studied and discussed by scientists and others. Two Main Animal Groups.

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Essential Question

  • How are animals classified?

    Vocabulary to know:

  • Classification

  • Vertebrate

  • Invertebrate


  • Animals are separated into groups or categories so that they are more easily studied and discussed by scientists and others.

Two Main Animal Groups

  • The two main groups of animals are vertebrates and invertebrates.


  • They tend to be small because they do not have a backbone to support their bodies. Many invertebrates live in the ocean, where the water helps support their weight.

What other things are invertebrates?

  • Worms

  • Snails

  • Sponges

  • Crabs

  • Lobster

  • Shrimp

  • Clams

  • Cockroaches

  • Spiders


They are animals that have backbones, such as a tiger or you! They can be as different as frogs and elephants. This large group of animals is divided into five smaller groups. Vertebrates tend to be much bigger than invertebrates.

The 5 groups of vertebrates

Animal Classification

  • Mammals

  • Fish

  • Birds

  • Reptiles

  • Amphibians



  • Have teeth

  • Have hair

  • Are warm blooded

  • Have a single jaw bone

  • Have inner ear bones

  • Produce milk for their young


  • Mammals have larger brains and seem to be the most capable  learners. 

  • All mammalian mothers nourish  their babies with milk.



  • Are cold-blooded vertebrate (backbone)

  • Live in water

  • Usually have paired fins, gills, and scales


  • Most fish lay large numbers of eggs, but some have live birth.

  • Most fish breathe by drawing water over four or five pairs of gills.



  • Are cold-blooded vertebrate (backbone)

  • Lay their eggs in water

  • Lack any skin coverings such as fur, scales or feathers


  • Young amphibians tend to resemble  small fish.

  • Amphibian means "two lives," a  reference to the change that frogs go through as they move from egg to  tadpole to frog. 

  • Even as adults, most frogs and other amphibians must stay close to water. 



  • Have feathers

  • Lay eggs

  • Have bodies specially adapted for flight

  • Have a beak rather than teeth


  • Their nearly hollow bones provide lightweight strength.

  • Birds now live almost everywhere on Earth.



  • Have scales

  • Lay leathery eggs on land

  • Are often called cold-blooded because they can't regulate their own body temperature


  • Reptiles do not use energy to fuel internal "furnaces"

  • Although reptiles breathe through lungs, some reptiles can also absorb oxygen in water through their mouth.

If you found a new animal, how could you classify it?

Quiz Time!!!!

1. Which animal is an invertebrate?

  • A. sharkB. jelly fish

  • C. dolphinD. whale

Which statement is not true?

  • A snake is an amphibian.

  • An alligator is a reptile.

  • An ostrich is a bird.

  • A deer is a mammal.

Which animal is cold-blooded?

  • A penguin

  • A polar bear

  • An eagle

  • A salmon (fish)

Scientists classify animals by…

  • Their names

  • Their roles as prey or predator

  • Their physical characteristics

  • What they usually eat

A shark is a vertebrate because it…

  • Is cold-blooded

  • Has a backbone

  • Lives in the ocean

  • Lays eggs

How do you know that this animal is an invertebrate?

  • It has a furry body.

  • It is a spider.

  • It comes from an egg.

  • It is cold-blooded.


  • Quia Classification Quiz

  • Charts: Animal classification, Fish, Bird, Amphibian, Animals,

  • The Animal Kingdom


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