Biology Questions and Answers
trematodes (or Trematoda) and
cestodes (or Cestoda).
Turbellarians are free-living
platyhelminthrepresentative is thes and their maine planaria (Dugesia (^)
tigrina). Trematodes are parasites, they
live inside (Schistosomaa host a mansoni) nd the schistosomethat causes
schistosomiasis is an example. Cestodes
are parasitesdigestive tubes and their cells are too, they do not have
nourished by absorption of nutrients
from threpresentative are host; their me the beef and porkost popular (^)
taenias (Taenia saginata ansolium) that parasite humans.d Taenia
- What are the main human
diseases caused by
platyhelminthes?
The main hplatyhelminthuman diseases causees are schistosomiasis,d by
tapeworm disease (cestodiasis) and
cysticercosis.
(Note:Diseases are studied in the
“Diseases” division of this e-book.)
- Platyhelminth identity
card. How are platyhelminthes
characterized according to
examples of representing
beings, basic morphology,
type of symmetry, germ layers
and coelom, digestive system,
respiratory system, circulatory
system, excretory system,
nervous system and types of
reproduction?
Examples of representing beings:
planarias,morphology: schistosomes,flat worm. T taenias. Basicype of
symmetry: bilateral. Germ layers and
coelom: triploDigestive system: incomblastics, acoelomates.plete.
Respiratory system: nrespiration by diffusion. Circulatoryonexistent, (^)
system: nonexistent. Excretory system:
protonephridia with system: ganglial, beginning offlame cells. Nervous
cephalization. Types of reproduction:
asexual and sexual.
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