Phylum

Question 1

Arachnomorpha

Answer 1

Basal group of trilobites, arachnids

Chelicerae

Question 2

Subphylum Chelicerata

Answer 2

Hollow fangs
Pedipalps, 4 pairs of legs, no antennae
scorpions, whip scorpions, pseudoscorpions, daddy-longlegs, mites, ticks, spiders

Question 3

Onycophoran

Answer 3

Velvet worm
Bilaterally symmetrical 
 Predaceous
 Thin flexible cuticle
Open circulatory system

Question 4

Subphylum Myriopoda

Answer 4

Millipedes and centipedes

Question 5

Subphylum Mandibulata

Answer 5

Mandibles
Appendages on third head segment modified to chew or grind food
2 pairs of antennae

Question 6

Crustaceans

Answer 6

2 antennae
2 maxillae
1 mandibles

Question 7

Panhexapod

Answer 7

?

Question 8

Entognatha

Answer 8

Entognathuscondition is derived
Monocondylic jaws
Reduced eyes in many species
Indirect fertilization