1. Chapter 19 Lophophorates Phoronida, brachiopods, bryozoans

2. Phylum Phoronida
Marine organisms that live in sediments

3. Phoronida characters
Filter feeding
Do not move
Cilia create current to bring particles to tentacles; then to mouth
Metanephridia
Blood vessel contains blood (w/ hemoglobin)

4. Sperm released from nephridia, collected by other individual
Phoronida
Hermaphroditic
Sperm released from nephridia, collected by other individual
Embryo = actinotroch

5. Phylum Brachiopoda
= “arm foot”
2-valve shell
Marine lophophorates

6. Phylum Brachiopoda characters
At poles or deep marine, permanently attached to substrate
Metanephridia
Circulatory system w/heart and contractile vessels - no blood pigment

7. Sperm, eggs discharged from nephridiopores Fert external
Brachiopoda
Sperm, eggs discharged from nephridiopores
Fert external

8. Phylum Bryozoa
Moss animals
Colonial animals that attach to substrate
Marine (5000 species) and freshwater (50)
Fossils (15,000)

9. Bryozoa
Secrete a covering around body
Asexual repro, hermaphroditic

10. Bryozoa
Sperm into coelomic cavity, released from openings in tentacles
Neighbors collect sperm for fert.
Some brood embryos

11. Digestion
Phoronids, bryozoans: U-shaped
Brachiopods: U-shaped one-way tract

12. Nervous systems
Ring at base of lophophore, around esophagus, or by pharynx
Mechanoreceptors and chemoreceptors scattered