Section 21.5- Flatworms and Roundworms

Question 1

belong to phylum Platyhelminths

Answer 1

flatworms

Question 2

two classes of parasitic flatworms

Answer 2

flukes
tapeworms

Question 3

one class or free-living, non-parasitic, flatworms

Answer 3

planarians

Question 4

free-living flatworms that live as scavengers in ponds, streams, and lakes

Answer 4

planarians

Question 5

as part of a planarian’s NERVOUS SYSTEM, each has two light-sensitive

responsible for the planarian’s nickname cross-eyed worm

Answer 5

eyespots

Question 6

is connected to a planarians eyespot’s and nerve network

Answer 6

brain

Question 7

the mouth of a planarian is located

Answer 7

near the middle of lower surface

Question 8

tubelike

attached to the inside of the mouth and can be extended out through the mouth

Answer 8

pharynx

Question 9

attached to the planarian’s pharynx

cells linings this digest food particles that the planarians suck in

Answer 9

gastrovascular cavity

Question 10

cell wastes of a planarian are collected and excreted through tiny

Answer 10

excretory pores

Question 11

most planarians reproduce ____________ but they can also reproduce ____________________

Answer 11

sexually

asexually

Question 12

parasitic flatworms that spend a part of their lives as parasites within snails

Answer 12

flukes

Question 13

the life cycle of a fluke is

Answer 13

complicated

Question 14

the most familiar fluke

Answer 14

sheep liver fluke

Question 15

a liver disease prevalent in certain areas of China, Korea, Japan, etc

caused by flukes that live in fish and are eaten not cooked in Asia; moves to human liver

Answer 15

Clonorchiasis

Question 16

parasitic worms that live in the intestines of their hosts

Answer 16

flatworms

Question 17

the small, knoblike head of a tapeworm that is equipped with hooks and suckers that permit the tapeworm to firmly attach itself to the intestine wall of host

Answer 17

scolex

Question 18

belong to phylum Nematodes; means thread worm

Answer 18

roundworms

Question 19

systems of roundworms

Answer 19

digestive
muscular
nervous
reproductive

Question 20

four parasitic roundworms that affect man

Answer 20

1. filaria worm
2. hookworm
3. trichina worm
4. Ascaris worm

Question 21

inhabits that vessels of the lymphatic system

Answer 21

filaria worm

Question 22

filaria worm that lives in humans produces serious condition called

Answer 22

elephantiasis

Question 23

worm which causes heartworm in animals

Answer 23

filaria worm

Question 24

parasitic roundworms that live in their host’s intestine and suck the host’s blood

Answer 24

hookworm

Question 25

parasitic roundworm that causes the disease trichinosis

Answer 25

trichina worm

Question 26

parasitic roundworms that feed mostly on partially digested food

affect most commonly children

Answer 26

Ascaris worm