Question

Internal bleeding, muscular pain, blockage of the intestinal passage and anaemia are some of the symptoms caused due to infection by?
A. Wuchereria
B. Trichophyton
C. Ascaris
D. Plasmodium

Answer 1

Hint: Internal bleeding, muscular pain and blockage of intestinal passage are some symptoms of the worm infections and humans are the host of these worms and can be transmitted from the contaminated food, contaminated soil which contain eggs of these worms.

Complete answer:
A disease known as ascariasis has symptoms like intestinal blockage, internal bleeding and muscular pain. This is a parasitic infection which is caused by the roundworms. The eggs of these roundworms are deposited in feces and soil or maybe sometimes present on the contaminated food. And can be transmitted.
These roundworms are cylindrical in shape and creamy white in color. And females are more length than males. The ends of these roundworms are also called fusiform. They respire through diffusion, have a complete digestive system, nervous system has nerve rings and many longitudinal nerve cords. And these worms reproduce through sexual reproduction mode.
> Ascaris lumbricoides is the main species of roundworms that cause ascariasis disease in humans. Other species A. suum cause infection particularly in pigs.
> Wuchereria bancrofti is a parasitic worm that mainly causes lymphatic filariasis, which is transmitted by mosquitoes. These worms are not responsible for the ascariasis.
> Trichophyton mentagrophytes is the most common fungal agent of mice. Thus, this is also not responsible for the ascariasis.

From all the discussion we can conclude that, Ascaris is the genus of roundworms that is responsible for the ascariasis disease in humans and option ‘C’ is the correct answer.

Note: Roundworms has a defense mechanism against the host immune system. These roundworms release many inhibitors that target digestive and immune related host proteases like pepsin, trypsin and metallocarboxypeptidases (MCPs).