ClassificationClassification

Grouping & Identifying Grouping & Identifying Living ThingsLiving Things

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Why classify?Why classify?

Think of three examples where we Think of three examples where we group things.group things.

Why do we group these things?Why do we group these things?

Classifying Living ThingsClassifying Living Things

We put livings things into two large We put livings things into two large groups:groups:

Animals Animals

PlantsPlants

AnimalsAnimals

Animals are spilt into two major Animals are spilt into two major groups:groups:

VertebratesVertebrates

InvertebratesInvertebrates

VertebratesVertebrates

These are animals with a backbone.These are animals with a backbone.There are five groups of vertebrates:There are five groups of vertebrates:

AmphibiansAmphibiansBirdsBirdsFishFishMammalsMammalsReptilesReptiles

AmphibiansAmphibians

Have moist skinHave moist skin Lay jelly coated Lay jelly coated

eggs in watereggs in water Lives on land and Lives on land and

waterwater

BirdsBirdsHave feathers and Have feathers and

hollow boneshollow bonesLay hard shelled Lay hard shelled

eggseggsWarm bloodedWarm blooded

FishFish

Have wet Have wet scalesscales

Lays eggs in Lays eggs in waterwater

Lives in waterLives in water

MammalsMammals

Have hair and Have hair and produce milkproduce milk

Give birth to live Give birth to live offspring (no eggs)offspring (no eggs)

Warm bloodedWarm blooded

ReptilesReptiles

Have dry scalesHave dry scalesLay leathery Lay leathery

shelled eggsshelled eggsCold bloodedCold blooded

Summary of VertebratesSummary of Vertebrates

InvertebratesInvertebrates

These are animals without a backboneThese are animals without a backbone There are eight groups of invertebratesThere are eight groups of invertebrates

MolluscsMolluscs Flatworms Flatworms AnnelidsAnnelids RoundwormsRoundworms SpongesSponges EchinodermsEchinoderms CnidariansCnidarians ArthropodsArthropods

MolluscsMolluscs

Crawl on a single Crawl on a single fleshy pad.fleshy pad.

Can have a shellCan have a shell

FlatwormsFlatworms

Have flat worm Have flat worm like bodieslike bodies

AnnelidsAnnelidsHave round worm Have round worm

like bodieslike bodiesHave bodies Have bodies

divided into divided into segments segments

RoundwormsRoundwormsHave long thin Have long thin

round worm like round worm like bodiesbodies

Have bodies with Have bodies with no segmentsno segments

SpongesSponges

Have bodies Have bodies made of loosely made of loosely joined cellsjoined cells

EchinodermsEchinoderms

Have bodies divided Have bodies divided into five partsinto five parts

Have spiny outer Have spiny outer coveringcovering

CnidariansCnidarians

Have thin sack Have thin sack like bodieslike bodies

Have tentaclesHave tentacles

ArthropodsArthropods

Have lots of legs and segmented Have lots of legs and segmented bodies.bodies.

There are four group of arthropods:There are four group of arthropods:

ArachnidsArachnidsCentipedes & MillipedesCentipedes & MillipedesCrustaceansCrustaceansInsectsInsects

Arthropods - ArachnidArthropods - ArachnidHave four pairs of Have four pairs of

legs.legs.Have bodies Have bodies

divided into two divided into two sectionssections

Arthropods – Centipedes Arthropods – Centipedes & Millipedes& Millipedes

Have long thin Have long thin bodies and pairs of bodies and pairs of legs on each of legs on each of their many body their many body sectionssections

Arthropods - CrustaceanArthropods - CrustaceanHave five-seven Have five-seven

pairs of legspairs of legsFirst pair often First pair often

used as pincersused as pincersBodies covered Bodies covered

in shellin shell

Arthropods - InsectsArthropods - InsectsHave three pairs of Have three pairs of

legslegsBodies divided into Bodies divided into

three sectionsthree sectionsOften have wingsOften have wings