You flatworms are long worms that have a flattened body, are triploblastic, acoelomates and have bilateral symmetry.
We prepared a list of exercises on flatworms so you can test your knowledge about the planarian group.
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1) (FUVEST) There are animals that do not have an organ or system specialized in performing gas exchange. In respiration, absorption of oxygen and elimination of carbon dioxide occur by diffusion across the epidermal surface. It is the case of:
a) flatworm.
b) oyster.
c) drosophila.
d) cheap.
e) spider.
2) (UFES) In order not to contract diseases such as cysticercosis and taeniasis, one should avoid, respectively:
a) eating poorly washed vegetables and eating undercooked beef or pork.
b) eating rare beef or pork and swimming in unknown ponds.
3) (UFRGS/2020) Cystic hydatid disease is a verminosis caused by Echinococcus granulosus, a worm popularly known as “dwarf tapeworm”, while the causative organism of taeniasis is Taenia solium or "tapeworm".
With regard to tapeworms, it is correct to state that:
a) the Taenia solium it develops cysticerci in the muscles of the ox, which is its intermediate host.
b) the Taenia solium and the Echinococcus granulosus they are worms with a complete digestive system.
c) the Taenia solium develops the larval stage in freshwater environments.
from the Taenia solium and the Echinococcus granulosus belong to the group of flatworms, which also includes free-living species.
and the Taenia solium adult reproduces in the intestine of the intermediate host.
4) (UEL) Read the following text.
The occurrence of worms, such as those caused by parasitic flatworms, is related to unfavorable socioeconomic situations. These diseases often affect people who live in precarious conditions of housing, sanitation and poor hygiene habits. Adapted from Linhares, S.; Gewandsznajder, F. Biology today. Sao Paulo: Attica. 2. ed. 2013, p. 132. v.2.
Based on the knowledge about taeniasis, mark the correct alternative.
a) A feature of the taenia is the presence of a digestive tube, since these parasites need to digest food taken from the host's intestine.
b) The intermediate host of the Taenia solium is the ox and the da Taenia saginata is the pig and, in both cases, the adult tapeworm lives attached to the wall of the large intestine of these animals, from where the eggs produced by sexual reproduction are eliminated.
c) An important part of the taeniasis cycle is when pig or beef faeces, contaminated by cysticerci, accidentally fall into water and are ingested by humans.
d) Human beings are contaminated by eating raw or undercooked meat that contains cysticerci, which, in the small intestine, undergo some alterations and attach to the intestinal mucosa through the scolex.
e) Taeniasis, when compared with human cysticercosis, is the most serious form of the parasitosis, because in this case, the human being is releasing eggs for a long time Taenia saginata environment and may contaminate other people.
5) (FGV) Diphyllobothriasis is a parasitosis acquired by eating raw fish meat, cooked, frozen or smoked at inappropriate temperatures, contaminated by the larval form of the agent etiological. The parasite cycle involves the release of proglottids by human feces full of eggs, which hatch in the water and start to host sequentially in small crustaceans, in small fish and, finally, in larger fish that, when ingested under the mentioned conditions, contaminate human beings humans. The information described about the diphyllobothriasis cycle reveals similarities with the cycle of:
a) taeniasis, group of flatworms.
b) schistosomiasis, group of molluscs.
c) ascariasis, group of annelids.
d) trypanosomiasis, group of protozoa.
e) filariasis, roundworm group.
6) (PUC) The patient who has cysticercosis:
a) was bitten by a triatoma.
b) swam in water with contaminated snails.
c) ingested tapeworm eggs.
d) ate pork or beef with tapeworm larvae.
e) walked barefoot on contaminated land.
7) (ENEM) Double humiliation of these worms, humiliation of confessing them to Dr. Alexander, seriously, before brothers who have fun with your intestinal fauna in perverse questions: “Are you going to the circus anyway? Are you taking your worms? Do they also pay admission if they can't see the show? And what if, hearing the clown's brags from inside, they want to go outside, huh? How do you manage?” What's worse: minimal worm, six modest inches, no more — stupid little worm — while Zé, rival at school, in arm wrestling, in everything, bragging, he shows on the glass the test ball of his just proud boast: he expelled, between oh! and ah! of acute familiar astonishment, formidable porcine tapeworm: the three-metre tapeworm. Andrade, C. d. Boitempo. Rio de Janeiro: Aguiar, 1988.
The text by Carlos Drummond de Andrade addresses two intestinal parasites that can affect human health. With regard to tapeworms, more specifically, the Taenia solium, it is considered that they can parasitize humans when they eat meat from:
a) undercooked fish.
b) undercooked chicken.
c) braised pork.
d) bad-roasted ox.
e) undercooked lamb.
8) (FUVEST) Parasitic flatworms Schistosoma mansoni (schistosome) and Taenia solium (tapeworm) have:
a) the human species as an intermediate host.
b) an invertebrate as an intermediate host.
c) two types of host, one intermediate and one definitive.
d) two types of host, both vertebrates.
e) a single type of host, which can be a vertebrate or an invertebrate.
9) (UTFPR) Many human diseases are related to environmental pollution caused by man himself. Some of these diseases may come from the contamination of water by untreated domestic sewage.
Mark the alternative that correctly relates the group of living beings with the disease and with water as a possible means of transmission.
a) Bacterioses, such as dengue and cholera.
b) Viruses, such as amebiasis and hepatitis.
c) Protozooses, such as meningitis and leptospirosis.
d) Worms, such as schistosomiasis and ascariasis.
e) Mycoses, such as pediculosis and scabies.
10) (UFPR) To increase agricultural production in a region marked by strong climatic seasonality, with prolonged dry periods, dams were built to improve irrigation. Food production has indeed increased. However, given the poor conditions of basic sanitation, there was also an increase in a common parasite in underdeveloped countries. What was the parasitosis that increased as a result of this alteration made by man?
a) Diphtheria.
b) Taeniasis.
c) Leprosy.
d) Schistosomiasis.
i) Chagas disease.
1 – the
2 – the
3 – d
4 – d
5 – the
6 – c
7 – c
8 – c
9 – d
10 – d
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