Invertebrates class ppt
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Classification: Invertebrates
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Transcript of Invertebrates class ppt
Classification: Invertebrates
What is classification?
Due to the large number of species of plants and animals, scientist put similar animals in groups. This is called classification.
How are living things classified?
What are Vertebrates and Invertebrates ?
Vertebrates are animals that have a backbone while invertebrates are animals without a backbone.
Which animals are vertebrates?
These animals include:
Fish
Birds
Reptiles
Amphibians
Mammals
Which animals are invertebrates?
The groups of invertebrates include: jellyfish and sea anemones, flatworms, roundworms, segmented worms, molluscs, starfish and sea urchins and arthropods.
Jellyfish and sea anemones
Jelly-like body.
Have tentacles with stinging cells to catch food.
Flatworms
Flattened body with no segments (divisions).
Roundworms
Long thin body with no segments.
Segmented worms
Long, tube-shaped body made of segments.
Molluscs
Many have a shell.
Body not in segments.
Move around on a muscular foot.
Starfish and sea urchins
5 ‘arms’ or star-shaped pattern on their bodies.
Spiny skins
Arthropods
Jointed legs.
Body has a hard outer skeleton
They can be divided into 4 smaller groups: Crustaceans, Insects, Spiders, Centipedes and millipedes.
Arthrodops: Crustaceans
Chalky outer skeleton.
Most live in water.
Arthropods: Insects
6 legs.
3 parts to the body.
Have wings.
Arthropods: Spiders
8 legs.
2 parts to the body.
No wings
Arthropods: Centipedes and millipedes
Long body made up of segments.
Many legs.
