Invertebrates Invertebrates
Jun 19, 2015
InvertebratesInvertebrates
InvertebratesInvertebrates
Invertebrates are animals without bonesInvertebrates are animals without bones Some of them have a shell or thick skin, Some of them have a shell or thick skin,
but they don’t have a skeleton insidebut they don’t have a skeleton inside
Types of invertebratesTypes of invertebrates
There are a lot of species of invertebrate There are a lot of species of invertebrate animals (much more than vertebrates) animals (much more than vertebrates)
Some of them have legs: they are Some of them have legs: they are arthropodes arthropodes
Many others don’t have legsMany others don’t have legs
ArthropodesArthropodes
They are invertebrates with legsThey are invertebrates with legs They have a thick skinThey have a thick skin InsectsInsects have got 6 legs have got 6 legs ArachnidsArachnids have got 8 legs have got 8 legs CrustaceansCrustaceans have got 10 legs have got 10 legs MyriapodesMyriapodes have got a lot of legs have got a lot of legs
InsectsInsects They have got six legsThey have got six legs Some have got wings, others haven’t. Some have got wings, others haven’t. Ants, beetles, flies, butterflies, bees and Ants, beetles, flies, butterflies, bees and
wasps are all insects, but there are many wasps are all insects, but there are many moremore
Other arthropodesOther arthropodes
Arachnids (8 legs): spider and scorpionArachnids (8 legs): spider and scorpion Crustaceans (10 legs): crab, lobster…Crustaceans (10 legs): crab, lobster… Myriapods (lots of legs)Myriapods (lots of legs)
MolluscsMolluscs
Molluscs are invertebrates with no legsMolluscs are invertebrates with no legs They have a shell in or outside their bodyThey have a shell in or outside their body
Other invertebratesOther invertebrates There are many more invertebrates without There are many more invertebrates without
shell or legsshell or legs Jellyfish, worms, sea horses, starfish and Jellyfish, worms, sea horses, starfish and
sponges are other species of invertebratessponges are other species of invertebrates