Chelicerata - Study guides, Class notes & Summaries

class Arachnida (sub-phy-Chelicerata)

Limulus (sub-phy-Chelicerata)

Scorpion (sub-phy-Chelicerata)

Ticks and Mites (sub-phy-Chelicerata)

class Pycnogonida (sub-phy-Chelicerata)

sub-phylum Chelicerata

Spider (sub-phy-Chelicerata)

WSU Biology 106 Exam 3 Questions Marking Scheme Spongocoel - ANSWER- the large central cavity of sponges. water enters the spongocoel through tiny pores called ostia and it exits through the large opening called the osculum. spongocoel is lined with choanocytes which help to create a current in the water. Spicule - ANSWER- structural elements found in most sponges. They provide structural support and deter predators. Large ones are called megascleres while microscopic ones are called mi...

class- Merostomata (sub-phy-Chelicerata)

Annelida correct answers segmened worms, serial repetition of parts Onychophora correct answers -velvet worms -slime glands chelicerata correct answers -6 pairs of appendages -4 pairs are leg-like -1 pair of pedipalps -1 pair of chelicerae (fang-like) -ex: spiders crustacea correct answers -2 pairs of antennae -biramous appendages (pinchers) myriapoda correct answers -1 pair of atennae -respiration via tracheal system -ex: centipede athropod classification correct answers...