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Invertebrates - Animals that do not have a backbone (Cnidarians (Radial…
Invertebrates - Animals that do not have a backbone
Sponges
Asymmetric
Have some specialized cells
No tissues
No organs
Take food in through their body to get energy
Worms
Worm types
Flat Worms
Have flat, soft bodies
Some have eyespots
Roundworms
Look like smooth, thin tubes
Have two body openings
Segmented worms
Have bodies made up of many linked sections
Simplest animal, with a brain
Bilateral Symmetry
Have head and tail ends
Have tissue, organs, and an organ system
Mollusks
They have soft, unsegmented bodies so they are protected by a hard shell
Have a thin layer of tissue called a mantle-it covers their internal organs and their organ-foot
Food used to either crawling, digging, or catching prey (varies from type of mollusk)
Types of Mollusks
Arthropods
Echinoderns
Cnidarians
Radial Symmetry
Have stinging cells
Have some tissue
No organs
Take food into a central body cavity
Example: Jellyfish and corals