AnimalsAnimals
Animals are spilt into two major Animals are spilt into two major groups:groups:
VertebratesVertebrates
InvertebratesInvertebrates
InvertebratesInvertebrates
These are animals without a backboneThese are animals without a backbone There are eight groups of invertebratesThere are eight groups of invertebrates
SpongesSponges CnidariansCnidarians Flatworms Flatworms RoundwormsRoundworms AnnelidsAnnelids MolluscsMolluscs ArthropodsArthropods EchinodermsEchinoderms
SpongesSponges
Live in water 5,000- 10,000 known
species Eats by sweeping water into
pores Simplest animal- No nervous
system, tissues or organs Reproduce sexually and
asexually Sessile – stay in one place Asymmetrical symmetry
CnidariansCnidarians
Live in water Approx. 9,000 known
species Tentacles have
stinging cells Simple muscles and
nerves Digestive tract with
one entrance and exit
Radial symmetry
FlatwormsFlatworms
Lives on moist land, water and parasitic
Approx. 12,000 known species
Simple nervous system Digestive tract with one
entrance and exit Reproduce sexually and
asexually Simplest bilateral
symmetrical animal
RoundwormsRoundworms
Lives on moist land, water, and in a host
Approx. 20,000 known species
Simple nervous system
Simple body planComplete digestive
tract with two endsBilateral symmetry
AnnelidsAnnelids
Lives on moist land and in water
Approx. 20,000 known species
Segmented bodyWell-developed organ
systemsComplete digestive
tract with two endsBilateral symmetry
MolluscsMolluscs
Lives on land and in water
Approx. 100,000 known species
Most have a shell Muscular “foot” used
to slide, dig or jump Complete digestive
tract with two ends Bilateral symmetry
ArthropodsArthropods
Lives on land and in water Most abundant phylum > 1 million Segmented bodies Hard exoskeleton Well-developed nervous system Complete digestive tract with two ends Bilateral Symmetry There are four group of arthropods:
InsectsInsectsCrustaceansCrustaceans
Centipedes & MillipedesCentipedes & MillipedesArachnidsArachnids
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
EchinodermsEchinoderms
Live in the water (Ocean)
Approx. 6,000 known species
Endoskeleton usually covered with spines
Complete digestive tract with two ends
Radial Symmetry
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:
FishFishAmphibiansAmphibiansReptilesReptilesBirdsBirdsMammalsMammals
FishFish Lives in waterLives in water
30,000-40,000 30,000-40,000 known speciesknown species
Gills for breathingGills for breathing
Fins Fins
Scales on bodyScales on body
EctothermsEctotherms
BilateralBilateral Symmetry Symmetry
AmphibiansAmphibians
Live in water and on land.Live in water and on land.
Approx.7000 known Approx.7000 known speciesspecies
Breath with lungs and Breath with lungs and through skinthrough skin
Metamorphosis (young Metamorphosis (young live in water, adults live live in water, adults live on land)on land)
EctothermEctotherm
BilateralBilateral Symmetry Symmetry
ReptilesReptiles
Live on landLive on land Approx.10,000 known Approx.10,000 known
speciesspecies Thick skin Thick skin Covered with scalesCovered with scales LungsLungs Lays eggs with Lays eggs with
shellsshells EctothermEctotherm BilateralBilateral Symmetry Symmetry
BirdsBirds
Live on landLive on land Approx.10,000 know Approx.10,000 know
speciesspecies Beak, feathers, wingsBeak, feathers, wings LungsLungs Hollow bonesHollow bones Lays eggs with hard Lays eggs with hard
shell shell EndothermsEndotherms BilateralBilateral Symmetry Symmetry
MammalsMammals
Live on land and in waterLive on land and in water Approx.5,500 know Approx.5,500 know
speciesspecies Mammary glands Mammary glands Hair all over body Hair all over body Large brains Large brains Specialized teethSpecialized teeth LungsLungs EndothermsEndotherms BilateralBilateral Symmetry Symmetry
RiddlesRiddles I live in the waterI live in the water
I have simple muscles and I have simple muscles and nervesnerves
I have radial symmetryI have radial symmetry What am I?What am I?
A Cnidarian
Include 3-4 factsInclude 3-4 facts
about the phylum/class about the phylum/class
(do not use(do not use
invertebrate/invertebrate/vertebrate)vertebrate)
Writingyour Riddles
2 parts to an answer:2 parts to an answer:• Name the phylum/className the phylum/class• Tell if it is a vertebrate or Tell if it is a vertebrate or
invertebrateinvertebrate
Solving others’ Riddles
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