Biology I—Chapter 27         Worms and Mollusks

After reading pages 682-688, I can:    (terms)

1. name the phylum that includes the flatworms.
2. give the term that describes a fluid-filled body cavity that is lined with mesoderm; give the term that defines the body cavity of the flatworms.
3. describe the function of the pharynx of flatworms; locate the pharynx in mammals.
4. name the organs of excretion in the flatworms; name the organs of excretion in mammals.
5. give the name for a group of nerve cells that make up a nervous system but are not considered complex enough to be called a brain.
6. tell what makes an organism a hermaphrodite.
7. explain how reproduction occurs through fission.
8. name the class of flatworms to which the planaria belong.
9. give an alternate name for the class Trematoda; state the major characteristic that defines this class.
10. explain the concept of an intermediate host.
11. give an alternate name for the members of the class Cestoda; give the major life-cycle characteristic that defines this class.
12. describe the function of proglottids.

After reading pages 689-696, I can:     (terms)  

1. give the phylum name for the roundworms.
2. explain the tube-within-a-tube body arrangement.
3. name the posterior opening of the digestive tract.
4. name the roundworm-caused disease that might result from eating undercooked pork or wild game.
5. list the five steps in the life cycle of the human ascarid worm (Ascaris lumbricoides); tell why young puppies are wormed.
6. describe how hookworms invade the body.
7. name the animal phylum that includes the earthworms; describe the origin of the phylum name.
8. contrast a closed and open circulatory system.
9. describe the function of nephridia.
10. give the term that describes an organism with both male and female reproductive organs.

After reading pages 697-708, I can:    (terms)

1. name the most common member of the annelid class Oligochaeta.
2. describe how earthworm castings are formed.
3. name the most common member of the class Hirudinea.
4. tell how leeches obtain their food.
5. tell what makes an animal a mollusk.
6. name the larval free-swimming stage of a mollusk.
7. name the chemical that makes up the shell of a mollusk,
8. locate the visceral mass in a mollusk.
9. tell how snails use their radula.
10. contrast an open circulatory system and a closed circulatory system.
11. name the mollusk class that includes the snails and slugs.
12. give the most common characteristic of the class Bivalvia.
13. name the class of mollusk that includes the octopi and squid.
14. tell what is meant by an indicator species and tell how mollusks can serve as indicator species.