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Invertebrates (What are they? (Characteristics (They have bilateral or…
Invertebrates
What are they?
They are animals without backbone
Characteristics
They have bilateral or radial symmetry and asymmetry
The presence or not of skeleton structure
INVERTEBRATES
Symmetry
Whith skeleton
Endoskeleton
Echinoderms
Exoskeleton
Jointed
Arthropods
Outer or inner shell
Molluscs
Without skeleton
Radial symmetry
Cnidaria
Bilateral symmetry
Annelids
Asymetry
Porifera
Porifera
They feed by filtration. Because the nutrients
pass through the walls to the sponge.
Have tiny spores that are connected
The skeleton is made of a material called spongin
Cnidaria
Polyps
Have a sac-like body.
They have structure for pass the substances.
Jellyfish
Have an umbrella-shaped body
Like polyps have a holle to save substances
All have tentacles.