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Characteristics of Arthropods - Coggle Diagram
Characteristics of Arthropods
What are the physical properties that characterize the phylum
Arthropoda
?
Exoskeleton
protection :sunny: :mask: :eagle:
anchoring skeletal muscles :meat_on_bone:
limiting body volume growth :frowning_face:
discontinuous growth
:!: Primary factor in arthropodization
Many changes
Cavity originally hydrostatic skeleton (strength :muscle:) Exoskeleton took over this role
Metamerism (segmentation) = = =
Molting
Ecdysis (shedding)
Complex eyes
Many
ommatidia
:camera_with_flash: :eye:
Signals (photoreception)
& Other organs (
ocelli
) :bulb::arrow_up_down:
Coelom reduction
Main body cavity
Loss of nephridia
New structures arose
Open circulatory system
Hemolymph :droplet::syringe:
Large body cavity
:red_cross:
Nervous System
Double chain :chains:
Segmentally arranged = = =
Ventral :pregnant_woman: ganglia
Paired jointed appendages
:!!:
Usually 1 pair/segment
Functional differentiation
