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Kingdom Animalia (What characteristics defines an Animal? (Levels of…
Kingdom Animalia
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Invertebrates
Platyhelminthes
Examples
This is an earthworm
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Echinodermate
Examples
This is a Starfish, part of the Echinoderms Phylum
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Echinoderms are marine animals with a thin layer of skin covers their exoskeleton, they also have an endoskeleton made of calcium carbonate plates.
Arthropoda
Example
This is a Fiddler Crab, Part of the Arthropoda Phylum
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Their exoskeletons are resistant to drying out, this allowed them to colonize terrestrial ecosystems hundreds of millions of years ago
Porifera
Example
This is a Tube Sponge
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What is an animal?
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They are usually mobile, or have the ability to move, in at least one stage of their lives
They are eukaryotic, multi cellular organisms. Their cells do not have cell walls
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