Arthropod – Jointed Foot

There are 6 types of invertebrates:There are 6 types of invertebrates:

SpongesSponges

CnidariansCnidarians

WormsWorms

MollusksMollusks

ArthropodsArthropods

EchinodermsEchinoderms

ArthropodsArthropods

An Arthropod is an invertebrate with an An Arthropod is an invertebrate with an exoskeleton, segmented body and jointed exoskeleton, segmented body and jointed legslegs..

There are 4 Sub Phylum'sThere are 4 Sub Phylum's1. Crustaceans1. Crustaceans

2. Spiders, Scorpions, Ticks and Mites2. Spiders, Scorpions, Ticks and Mites

3. Centipedes and Millipedes3. Centipedes and Millipedes

4. Insects4. Insects

And one Class that is Extinct…And one Class that is Extinct…

All Arthropods have an All Arthropods have an ExoskeletonExoskeleton

An exoskeleton is a An exoskeleton is a hard outer coveringhard outer covering..

MoltingMolting

When they When they grow too biggrow too big for their for their exoskeletons arthropods will molt – or exoskeletons arthropods will molt – or shed their skin and grow a new one.shed their skin and grow a new one.

Segmented BodiesSegmented Bodies

All Arthropods have segmented bodies. All Arthropods have segmented bodies. Usually in Usually in 2 or 3 segments2 or 3 segments..

Sub Phylum MyrapodsSub Phylum Myrapods

Class Chilopods :Class Chilopods :CentipedesCentipedes one pairone pair of legs on each of legs on each segment, segment, capture preycapture prey with with poison and claws and live in poison and claws and live in dark warm places.dark warm places.

Class Diplopoda :Class Diplopoda :MillipedesMillipedes two pairtwo pair of legs on each of legs on each segment, segment, eat plantseat plants, no claws , no claws and live in dark warm places.and live in dark warm places. Giant Millipe

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Other Characteristics of ArthropodsOther Characteristics of Arthropods

Arthropods have segmented bodiesArthropods have segmented bodies

Compound eyesCompound eyes

Jointed legsJointed legs

Hearts that pump blood thru their bodiesHearts that pump blood thru their bodies

Reproduce sexuallyReproduce sexually

Sub Phylum CrustaceanSub Phylum Crustacean

A crustacean is an arthropod that has a hard, exoskeleton, two pairs of antennae, and a mouthparts for crunching and grinding.

Examples: Crab, Lobsters, Barnacles and Shrimp

Sub Phylum Sub Phylum ArachnidsArachnids

Spiders, Scorpions, Ticks and MitesSpiders, Scorpions, Ticks and Mites Have 8 legsHave 8 legs Have a body divided into two parts…Have a body divided into two parts…

Head and CephalothoraxHead and Cephalothorax

SpidersSpiders

Eat bugs or small invertebrates (birds, mice)Eat bugs or small invertebrates (birds, mice)

Can make webs out of silk spinning Can make webs out of silk spinning spinneretsspinnerets

Spiders bite and poison their prey Spiders bite and poison their prey

Breath through Breath through book lungsbook lungs Worlds biggest spider

Subphylum Subphylum UniramiaUniramia

• There are more kinds of insects than there are all other animal species all together.

• There could be times as many 300 million insects as humans on Earth

• Their bodies are divided into three parts. Head, thorax and abdomen.

Subphylum UniramiaSubphylum Uniramia

Insects have Insects have six legssix legs..

When insects change their appearance When insects change their appearance dramatically it’s called dramatically it’s called metamorphosismetamorphosis..

There are two types of metamorphosisThere are two types of metamorphosis CompleteComplete IncompleteIncomplete

Complete MetamorphosisComplete Metamorphosis

In complete metamorphosis, insects like butterflies and moths have four stages of development.

Metamorphosis Video

Incomplete MetamorphosisIncomplete Metamorphosis

Incomplete metamorphosis happens in grasshoppers, termites, and dragonflies.

Young look like adult, keep growing and molting into adults.

Incomplete metamorphosisIncomplete metamorphosis

Giant Waterbug Lifecycle

Match with book OrdersMatch with book Orders

Find the order names from the list of insects Find the order names from the list of insects below. Pg 762below. Pg 762

MothMoth BeeBee FleaFlea

BeetlesBeetles MayfliesMayflies AntsAnts