Question

Ascaris is characterised by
a) Absence of true coelom but presence of metamerism
b) Presence of neither true coelom nor metamerism
c) Presence of true coelom but absence of metamerism
d) Presence of true coelom and metamerism

Answer 1

Hint: Ascaris is a parasitic nematode worm known as "intestinal roundworms." It is a parasitic worm. Ascaris lumbricoides is a type of animal that affects humans and causes the infection ascariasis. Another species, Ascaris suum, is normally contagious to the pigs.

Complete answer:
Ascaris is a parasitic nematode worm with a pseudocoelom, or false hole or cavity, in which tissue derived from the mesoderm only partially lines the liquid-filled body pit. Metamerism is the property of having rehashed sections, which is missing in nematodes. Ascaris is a human endoparasite. It has a smaller digestive system than adults for the majority of the time. There is no metameric division in the body, which is lengthened, barrel-shaped, and gradually tightens at the two ends. In Ascaris, there is a large liquid-filled cavity between the body divider and the instinctive organs. This depression is not true coelom because it is not lined by coelomic epithelium, has no connection with regenerative and excretory organs, and is formed by blastocoel. This body cavity is referred to as a pseudocoel.

Additional Information
Ascariasis is caused by an intestinal parasite known as Ascaris, also known as roundworms. The roundworm is a pale white, long, thin cylinder-shaped worm that lives in people's digestive tracts. The roundworm can be found as eggs in the excrement of a person who has been infected with it. Flies are widely regarded as the primary vector of roundworms in humans. They are generally asymptomatic, but there are changes for symptoms to appear if their number is more. Fever, a lack of healthy sustenance, obesity and loose bowels are all symptoms. This disease has the greatest impact on children.

Note:
Humans are contaminated by these worms when they consume food or water contaminated with Ascaris worm eggs. Ascaris relies on humans and pigs as hosts. Other common hosts for Ascaris include monkeys, canines, and so on.