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SKIN - Coggle Diagram
SKIN
INVERTEBRATES
Protozoa
pellicle in paramicium, semi rigid
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plasma membranr,diffusion
echinoderms
thin,ciliated epidermis ,spines or hardplates
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arthropods
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molting , hard exoskeleton
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crustaceans
thick rigid cuticle, support body
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nematodes
one cell thick epidermis ,stinging cells
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VERTEBRATE
REPTILES
dry,covered with scales,no water loss
suit of armour,shedding,keratinization
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FISH
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reduce friction,photophores
Covered with scales,slime glands,denticls
MAMMALS
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fur or hair,thick epidermis
BIRDS
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insulation,flight,display,air spaces
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