Arthropoda (insects, spiders, lobsters)

Question 1

symmetry

Answer 1

bilateral

Question 1

characteristics

Answer 1

-body is segmented (head, thorax, abdomen areas)
-rigid outer skeleton made of chitin (molding)
-coelomate
-jointed (hinged) appendages
joints are thinned areas of exoskeleton

Question 2

body plan

Answer 2

• complete digestive system
  -open circulatory system
• respiratory system
  -specialized sensory structures
  -dimorphic

Question 3

respiratory system

Answer 3

aquatic- gills
terrestrial- tubes

Question 4

dimorphic

Answer 4

-juvenile stage (feeding)
-adult stage (reproduction)

Question 5

Merostomata (horseshoe crab)

Answer 5

no antennae, 4 pairs of legs, marine

Question 6

Arachnids (spiders, mites, ticks)

Answer 6

no antennae, 4 pairs of legs, mostly terrestrial

Question 7

Diplopoda (millipedes)

Answer 7

1 pair of antennae, 2 pairs of legs, terrestrial

Question 8

Chilopoda

Answer 8

1 pair of antennae, 2 pairs of legs, terrestrial

Question 9

Insecta/Hexapoda

Answer 9

1 pair of antennae, 3 pairs of legs, mostly terrestrial

Question 10

Crustacea (lobster, crab, shrimp)

Answer 10

2 pairs of antennae, 1 pair of legs on most segments, mostly aquatic