Ch 9_section 4

Question 1

What are the three main phyla of worms?

Answer 1

1. flatworms
2. roundworms
3. segmented worms

Question 2

What is the definition for:

parasite

Answer 2

an organism that lives inside or on another organism

Question 3

What is the definition for:

host

Answer 3

the organism in or on which a parasite lives

Question 4

What is the definition for:

free-living organism

Answer 4

does not live in or on other organisms

Question 5

What is the definition for:

scavenger

Answer 5

organisms that feed on dead or decaying material

Question 6

What is the definition for:

anus

Answer 6

the far end of a tube; opposite the mouth

Question 7

What is the definition for:

closed circulatory system

Answer 7

blood moves only within a connected network of tybes called blood vessels

Question 8

What are the main characteristics of each phylum of worms?

Flatworms

Answer 8

1. flat and soft as jelly

Question 9

What are the main characteristics of each phylum of worms? roundworms

Answer 9

have a digestive system that is like a tube, open at both ends

Question 10

What are the main characteristics of each phylum of worms? segmented worms

Answer 10

have bodies made up of many linked sections called segments