Question

The eggs of which parasite are bile stained?
(a) Ascaris lumbricoides
(b) Ancylostoma duodenale
(c) Enterobius vermicularis
(d) Necator Americans

Answer 1

Hint: A parasite is an organism that lives in or on an organism of another species, known as the host. It obtains nutrients from the body of the host. This parasite causes Ascariasis which is an infection of the small intestine.

Complete answer:
Ascaris lumbricoides is also known as roundworm. Its eggs are bile stained. It belongs to the class chromadorea of phylum Nematoda. It is a parasite that infects humans via the fecal-oral route. Fertilized and unfertilized eggs of Ascaris lumbricoides are passed in the stool of the infected host. Fertilized eggs are rounded and have a mineral layer that is often stained by bile as they pass through the excreta.

Additional Information: -Both male and female Ascaris elongated cylindrical bodies that taper at both ends, but only in males, the tail is curved ventrally.
-Ancylostoma duodenale also known as intestinal hookworm. The larva matures into an adult within the intestine (jejunum mainly), where they attach to the villi, and feminine worms can lay 25,000 eggs per day. The eggs are released with the feces and reside on soil; when soil becomes warm, moist, a larva rapidly develops within the egg and hatches after 1 to 2 days.
-Enterobius vermicularis is also known as human pinworm. The eggs of pinworm measure 50—60 µm by 20—30 µm. They are transparent, elongate to oval in shape, and slightly flattened on one side.
-Necator Americans are a species of hookworm. They are associated with blood loss and anemia. Patients who are infected with around 25 to 100 worms experience symptoms like fatigue, weight loss, and slight headaches.

So, the correct answer is,’ Ascaris lumbricoides’.

Note: -The presence of roundworms in the intestine causes nausea, vomiting, irregular stools or diarrhea, intestinal blockage, which causes severe pain and vomiting, intestinal blockage, loss of appetite, visible worms in the stool, and abdominal discomfort or pain.
-Albendazole and mebendazole, are the drugs of choice for the treatment of Ascaris infections.
-Infections are generally treated for 1-3 days. The drugs are effective and appear to possess a few side effects.
-Albendazole and mebendazole are drugs also used for the treatment of hookworm and human pinworm.