Phylum Annelida,Lophophorates and Branchiopoda

Family Nereididae (Sandworms,ragworms)

Class Polychaeta

Phylum Annelid

Parapodia of nereididae

What is this structure called

Chaetae, stiff bristle made of chitin in annelid worm

Cross-section of Alitta virens

Family Eunicidae (bobbitt worm)

Class Polychaeta

Phylum Annelida

Family Glyceridae (bloodworms)

Class Polychaeta

Phylum Annelida

Family Amphinomidae (fireworms)

Class Polychaeta

Phylum Annelida

What are calcareous setae and what family has them?

They are bristle-like appendages that contain poison for defense, found in the Amphinomidae family

What is a caruncle and a characteristic to which family?

A wrinkled sensory organ, located backwards from the prostomium. Found in the family Amphinomidae

Family Polynoidae (scale worms)

Class Polychaeta

Phylum Annelida

Family Arenicolidae (lugworms)

Class Polychaeta

Phylum Annelida

Family Sabellariidae (mason worms)

Class Polychaeta

Phylum Annelida

Family Sabellidae (feather duster worm)

Class Polychaeta

Phylum Annelida

Family Serpulidae (Christmas tree worm)

Class Polychaeta

Phylum Annelida

Family Terebellidae (Medusa worms)

Class Polychaeta

Phylum Annelida

Family Chaetopteridae (parchment tube worm)

Class Polychaeta

Phylum Annelida

Family Tomopteridae (glass worms)

Class Polychaeta

Phylum Annelida

Family Sipuncula (peanut worms)

Class Polychaeta

Phylum Annelida

Cross-section of Lumbricus (earthworms)

Class Clitellata, subclass Oligochaeta

Hirudo medicinalis (leeches)

Subclass Hirudinoidea, class Clitellata

Phylum Annelida

Bugula pacifica

Order Cheilostomata

Clade Lophophorates

Phylum Bryozoa

Lingula

Clade Lophophorata

Subphylum Linguliformea, Phylum Brachiopoda

Terebratulina

Clade Lophophorata

Subphylum Rhynchonelliformea, Phylum Brachiopoda

The Prostomium can best be described as

Anterior segment containing brain, mouth, & sensory tentacles

What are Radioles

Featherlike ciliated head appendages that function in feeding and respiration

Parapodia are described as

Paired, lateral, unsegmented fleshy appendages

Among inarticulate brachiopods such as Lingula, the two valves are held together

by a combination of muscles and interlocking teeth

Clitellum are described as

Corset-like band of secretory epidermis

What are lophophore

A funnel-shaped ring of ciliated tentacles that are feeding organs

What are radioles?

feathery, tentacle-like structures that form the feeding and respiratory crown of Sabellidae and Serpulidae

What is the feeding mechanism for Terebellidae called?

selective deposit feeding

What are the aliform parapodia and what family has them

they are wing-like parapodia which produce the mucus feeding bag to capture food particles. This is found in the family Chaetopteridae

How have the parapodia been modified for Tomopteridae relative to crawling polychaetes?

distinctive, paddle-like, appendages of the deep-sea tomopterid worms that are adapted for swimming and prey capture

How is the Sipuncula (peanut worm) body divided?

slender anterior introvert & sausage-like posterior trunk, Introvert contains brain & mouth & can be retracted into trunk.

What are ciliated urns?

coelomic micro-organs that are free in coelom or fixed to coelomic lining; for internal defense.

What is this structure called and what group can it be found in?

Typhlosole and its found in subclass Oligochaeta