Section 21.5- Flatworms and Roundworms Flashcards
belong to phylum Platyhelminths
flatworms
two classes of parasitic flatworms
flukes
tapeworms
one class or free-living, non-parasitic, flatworms
planarians
free-living flatworms that live as scavengers in ponds, streams, and lakes
planarians
as part of a planarian’s NERVOUS SYSTEM, each has two light-sensitive
responsible for the planarian’s nickname cross-eyed worm
eyespots
is connected to a planarians eyespot’s and nerve network
brain
the mouth of a planarian is located
near the middle of lower surface
tubelike
attached to the inside of the mouth and can be extended out through the mouth
pharynx
attached to the planarian’s pharynx
cells linings this digest food particles that the planarians suck in
gastrovascular cavity
cell wastes of a planarian are collected and excreted through tiny
excretory pores
most planarians reproduce ____________ but they can also reproduce ____________________
sexually
asexually
parasitic flatworms that spend a part of their lives as parasites within snails
flukes
the life cycle of a fluke is
complicated
the most familiar fluke
sheep liver fluke
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
Clonorchiasis
parasitic worms that live in the intestines of their hosts
flatworms
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
scolex
belong to phylum Nematodes; means thread worm
roundworms
systems of roundworms
digestive
muscular
nervous
reproductive
four parasitic roundworms that affect man
- filaria worm
- hookworm
- trichina worm
- Ascaris worm
inhabits that vessels of the lymphatic system
filaria worm
filaria worm that lives in humans produces serious condition called
elephantiasis
worm which causes heartworm in animals
filaria worm
parasitic roundworms that live in their host’s intestine and suck the host’s blood
hookworm
parasitic roundworm that causes the disease trichinosis
trichina worm
parasitic roundworms that feed mostly on partially digested food
affect most commonly children
Ascaris worm
