Question

‘Grand Old Man of Intestine’ is __________.
A. Entamoeba
B. Giardia
C. Trichomonas
D. Balantidium

Answer 1

Hint: Giardia is present only in the small intestine and causes infection. It is not present at any other tissue inside the body. It is a four flagellated protozoan which helps in the movement of the Giardia and it has two nuclei and is known as diplomonads.

Complete Answer:
Entamoeba is another eukaryotic organism which lives inside the animals with commensal relationship in which it gets benefited by the host but the host did not get any effect.
Outside the host it can survive for weeks and comes out from the infected person through feces. Disease which is caused by the infection of Giardia is known as Giardiasis, which can spread by many ways:
- It can spread through infected surfaces like toys, diapers, handles, etc.
- It can spread through water if it is infected.
- Partially cooked food which contains eggs of the Giardia.

Trichomonas is a parasite that causes trichomoniasis and maximum time people do not get symptoms when infected. Some symptoms may include itching, foul smelling vaginal discharge and burning sensation during urination. Also, it may lead to complications during the pregnancy.

Balantidium is a protozoan which is responsible for the Balantidiasis disease in humans. Some infections are vomiting, constipation, abdominal pain, colitis, etc.

Thus, we can say that the correct option is option ‘B’.

Note: Giardia is a parasite which is responsible for diarrheal illness and can be found on the soil surfaces, food materials and water bodies. This organism is dependent on others for its survival. It can choose its host as humans, cats, cattle and other organisms.