Lab 3

Question 1

commensals with other inverts; pharynx with one pair of jaws; relatively few segments; chateau are serrated and he parapodia are well developed; torso-ventrally flattened and relatively flat

Answer 1

Family Polynoidae

Question 2

mud, clay, gravel, shell fragments or parchments-like tubes; heteronomous body; head bear numerous elongate feeding tentacles

Answer 2

Family Terebellidae

Question 3

leathery mucus tubes in sand; no trace of a pharynx or proboscis; left of tenches at the anterior end; fan worms

Answer 3

Family Sabellidae

Question 4

calcium carbonate tubes; have an operculum to seal off the tubes; heteronomous body; anterior end bears tentacular crown; funnel shaped operculum’ christmas tree worms

Answer 4

Family Serpulidae

Question 5

parchment-tube worms; secrete the parchment tubes in which they live; mucus bag feeders (filter feeders –> food cup); live in u-shaped curious; distinctly heteronomous; highly modifies parapodia for anchoring and mucous secretions

Answer 5

Family Chaetopteridae