Characteristic features of Arthropoda Flashcards
1
Q
Marine, freshwater or terrestrial
A
All of them
2
Q
Bilateral- or radial symmetry
A
Bilateral
3
Q
Diploblastic or triploblastic
A
Triploblastic
4
Q
Skeleton
A
Cuticular (yttrehud) exoskeleton
5
Q
Metameric/segmented body or unsegmented
A
Segmented/metameric body
6
Q
Coelom or no coelom
A
Reduced coelom
(body cavity mostly hemocoel filled with hemolymph)
7
Q
Digestive system
A
Complete
8
Q
Cilia or no cilia
A
No cilia
9
Q
Nervous system
A
Pair of dorsal cerebral ganglia
Ventral nerve cord
10
Q
Sexes
A
Usually separate
(internal fertilization)
11
Q
Respiration by
A
body surface, tracheae, gills or book lungs
12
Q
Open or closed circulatory system
A
Open
(dorsal contractile heart, arteries and hemocoel)
