Lab 6 - Arthropods Flashcards
Are arthropods lophotrochozoans or ecdysozoa?
Ecdysozoa
What organisms are found in arthropoda?
insects, crustaceans, millipedes, crabs
What level of organization are arthropoda?
organ system
How many germ layers do arthropoda have?
3 - triploblastic
What kind of body cavity do arthropoda have?
coelom
What kind of symmetry do arthropoda have?
bilateral
What kind of digestion do arthropoda have?
complete
What kind of skeleton do arthropoda have?
exoskeleton
Arthropoda - locomotion
appendages and wings
What kind of circulation does arthropoda have?
open
What kind of sensory structures do arthropoda have?
ocelli and antennae
How do arthropoda excrete?
antennal glands and malpighian tubes
How do arhtrpoda reproduce?
sexual
Are arthropoda monoecious or dioecious?
dioecious
Do arthropoda shed a cuticle?
yes
Metamerism
repetition of body segments
Tagmata
segments fused together (head, thorax, and abdomen)
How do arthropoda respire?
book gills or book lungs (trachea)
Sexual dimorphism
distinct differences between sexes of the same species
Hemimetabolous development
gradual - nymphs
Egg -> several nymphs -> adult
Holometabolous development
complete - pupal
Egg -> several larval instars -> pupal -> adult
What are the subphylum?
chelicerata, myriapoda, crustacea, and hexapoda
Subphylum Chelicerata
spiders, ticks, and horseshoe crabs
Subphylum Myriapoda
centipedes and millipedes
Subphylum Crustacea
lobsters and others
Subphylum hexapoda
insects
What are uniramous appendages?
unbranched
What are biramous appendages?
branched
